Answer: Scattering reflection
Sunlight reaches earth's atmosphere and is scattered in all directions by all the gasses and particles in the air. Blue light is seen more than others because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.
Explanation:
Answer:
Scattering...
The circumference of the earth is 40,000 km. The distance from the
North Pole to the equator is 1/4 of the circumference of the earth, which equals __ m.
Answer:
The distance from the North Pole to the equator is [tex]1*10^{7}[/tex]m.
Explanation:
Circumference of Earth = 40,000 km ......................(1)
Distance from the North Pole to the Equator is = 1/4th of the Circumference of Earth ...................... (2)
Let Distance from the North Pole to the Equator be d ,
the equation formed will be ,
d = 1/4 * Circumference of Earth ........(3)......... ( from equation 1 )
put the value of Circumference of Earth in equation (3),
d = 1/4 * 40,000 km
d = 10,000 km
converting km to m ,
d = 10,000 * [tex]10^{3}[/tex] m
d = 1 * [tex]10^{7}[/tex] m
The distance from the North Pole to the equator is [tex]1*10^{7}[/tex]m.
The distance from the North Pole to the equator is 1/4 of the Earth's circumference, which equals 10,000,000 meters.
Explanation:The distance from the North Pole to the equator is 1/4 of the circumference of the earth. Given that the circumference of the earth is 40,000 kilometers, we can calculate this by dividing the circumference by 4. So, 40,000 km ÷ 4 = 10,000 km. To convert this into meters, we multiply by 1,000 (since there are 1,000 meters in a kilometer), thus 10,000 km × 1,000 = 10,000,000 meters. The distance from the North Pole to the equator is 1/4 of the circumference of the earth. The circumference of the earth is 40,000 km, so 1/4 of that distance would be 10,000 km.
A block on an inclined plane experiences a force due to gravity of 300 N straight down. If the slope is inclined at 67. 8° to the horizontal;
(a) what is the component of the force due to gravity perpendicular and parallel to the slope? and
(b) at what angle would the perpendicular and parallel components of the force due to gravity be equal?
Answer:
Correct answer: (a) F|| = 277.8 N and F⊥ = 113.4 N (b) α = 45°
Explanation:
Given :
Fg = 300 N and angle α = 67.8°
Let be perpendicular component be F⊥ and parallel component F||
(a)
F|| = Fg · sinα = 300 · sin 67.8° = 300 · 0.926 = 277.8 N
F|| = 277.8 N
F⊥ = Fg · cosα = 300 · cos 67.8° = 300 · 0.378 = 113.4 N
F⊥ = 113.4 N
(b)
Perpendicular and parallel components will be equal at angle
α = 45°
F⊥ = F|| = Fg · sinα = Fg · cosα = 300 · √2/2 = 212.13 N
God is with you!!!
Final answer:
When an object rests on an inclined plane, the force of gravity is divided into two components: one perpendicular to the slope and one parallel to the slope. The perpendicular component can be found using the formula w₁ = w * sin(θ), where w is the force due to gravity and θ is the angle of inclination. The parallel component can be found using the formula w|| = w * cos(θ). The perpendicular and parallel components of the force due to gravity will be equal when the object is on an incline with an angle of 45° to the horizontal.
Explanation:
When an object rests on an inclined plane that makes an angle with the horizontal, the force of gravity acting on the object can be divided into two components: a component perpendicular to the slope and a component parallel to the slope. The component perpendicular to the slope is equal in magnitude and opposite in direction to the normal force exerted by the inclined plane on the object. The component parallel to the slope causes the object to accelerate down the incline. In this case, the force due to gravity is 300 N straight down. To find the components of this force, we can use trigonometry.
(a) Perpendicular and Parallel Components
To find the component of the force due to gravity perpendicular to the slope, we can use the formula: w₁ = w * sin(θ) where w is the magnitude of the force due to gravity and θ is the angle of inclination. Substituting the values, we have: w₁ = 300 N * sin(67.8°) = 274.16 N So, the component of the force due to gravity perpendicular to the slope is approximately 274.16 N.
To find the component of the force due to gravity parallel to the slope, we can use the formula: w|| = w * cos(θ) Substituting the values, we have: w|| = 300 N * cos(67.8°) = 125.85 N So, the component of the force due to gravity parallel to the slope is approximately 125.85 N.
(b) Equal Components of Force
The perpendicular and parallel components of the force due to gravity will be equal when the object is on an incline with an angle of 45° to the horizontal. At this angle, the sine and cosine functions will have the same value, resulting in equal components of force.
What are some physical activities you can do at home to help you with arm strength , as well as
leg strength? Describe the activity ? Describe the amount of reps, and sets you will be doing per activity. 1 paragraph
Answer:
See the explanation below
Explanation:
To improve the strength in the arms can be performed arm push-ups, there are different variants for this exercise. But ideally, perform the known basic exercise, try to touch with the chest the floor and then rise up to the length of the arms using the strength of these. It will be necessary for beginners to perform a routine of 3 sets to 10 repetitions. Rest one day. In the third week you can perform 4 sets to 25 repetitions, resting only one day. This will improve the strength in the arms considerably.
For the legs should stimulate the muscle of the quadriceps, should perform an exercise known as squat, to perform it should be lowered with your back straight until the knees form an angle of 90 degrees, for beginners should perform 3 sets of 15 repetitions a day, resting only one day. In the second week you can perform 4 sets of 25 repetitions a day, resting one day a week.
Which of the following best describes what occurs in a fusion reaction?
Answer:
In the process some of the mass of the hydrogen is converted into energy. ... The sun and stars do this by gravity.
Explanation:
A car accelerates from 20mi/hr to 60mi/hr. How many times greater is the car's kinetic energy at the higher speed compared to the kinetic energy at the slower speed
Answer:
9 times
Explanation:
Kinetic energy is:
KE = ½ mv²
When we triple the velocity, the kinetic energy increases by a factor of 9.
9KE = ½ m(3v)²
The kinetic energy of the car at 60 m/hr is 9 times greater than the kinetic energy at 20 m/hr.
What do you mean by kinetic energy?Kinetic energy is a form of energy that an object possesses by virtue of its motion and is dependent on the mass and velocity of the object.
The kinetic energy of an object is given by the equation:
KE = (1/2)mv²
Where
KE = is the kinetic energy,
m = is the mass of the object,
v = its velocity.
Here in this question,
The kinetic energy of an object is proportional to the square of its velocity, so if a car accelerates from 20 km/hr to 60 km/hr, its kinetic energy at the higher speed will be:
KE(higher) = 1/2 ×m × v(higher)²
And at the lower speed, the kinetic energy will be:
KE(lower) = 1/2 ×m × v(lower)²
Where
m = the mass of the car.
Now for ratio, we have to divide the two equations:
KE(higher) / KE(lower) = [1/2× m ×v(higher)²] / [1/2 × m × v(lower)²]
The mass of the car cancels out, leaving us with:
KE(higher) / KE(lower) = (v(higher)²) / (v(lower)²)
Now, we get:
KE(higher) / KE(lower) = (60²) / (20²) = 9
Therefore, the kinetic energy of the car which is moving at a speed of 60 m/hr is 9 times greater than the kinetic energy of the car which is moving at 20 m/hr.
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Infrasounds _____.
can be used to view internal organs
are sounds with frequencies below 20 Hz
are sounds with frequencies above 20,000 Hz
travel in transverse waves
Infra sounds are sounds with frequencies below 20 Hz.The popular concept that infra sounds are in audible holds false
Explanation:
Some example of Infrasounds are- some animals such as whales, elephants and giraffes which communicate with each other using infrasound over long distances. Various natural phenomenon such as Avalanches, volcanoes, earthquakes, ocean waves, water falls and meteors also generate infrasonic wavesInfrasound, is sound that is lower in frequency than 20 Hz or cycles per second.Even the human body can generate mechanical vibrations at very low frequencies, which are known as the infrasonic waves. Such low-frequency vibrations/infrasonic waves are produced by physiological processes—such as heartbeats, respiratory movements, blood flow in vessels, and other processes.
So
Some lakes, such as the Great Salt Lake, accumulate soluble minerals such as salt. In
those lakes, people find it much easier to float than when they are in fresh water. Why is
this the case?
The reason for people to swim easier in salt water than fresh water is because of buoyancy
Explanation:
In fresh water there is lack of minerals and has fresh water alone. The density of fresh water is 1000 kg/m³. Hence, in fresh water cannot exert the suitable buoyancy for the swimmer to float easier than that of salt water.
But in Salt water due to enrichment of salts and minerals it is found that salt water has more density than fresh water. Here the salt water offers more buoyancy to the swimmer to lift him up in the water surface and to swim faster and easier than fresh water.
It is similar to that egg floats in the salt water and sinks inside the fresh water because of its own body weight.
A ray in diamond (n = 2.42) has a critical angle of 41.7 deg when trying to enter benzene. What is the index of refraction in benzene?
Answer: 1.50
Explanation:
Given that:
C (critical angle) = 41.7°
n (index of refraction in benzene) = 2.42
n (index of refraction in benzene) = ?
To get the index of refraction in benzene, Apply the formula n = 1/sineC,
n = 1/sine41.7°
n = 1/sine 41.7°
n = (1/0.6652)
n = 1.50
Thus, the index of refraction for the ray in benzene is 1.50
Answer:
1.61 is the answer
Explanation:
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What circuit that has only one path for the
current to follow?
Answer:
Series circuit
Explanation:
By definition series circuit is a closed circuit in which the flow of electric current follows only one path.
In a simple electrical circuit (which is a series circuit) where electric cell is the source of power, each component is connected in such a way that there is only one pathway current flows from the positive terminal(+) round to the negative terminal(-) via the external circuit.
Current having only one pathway to flow means that when one of the components is removed, there will be no current flow.
Wind blowing sand from one location to another is an example of
erosion
movement
weathering
deposition
Wind blowing sand from one location to another is an example of erosion. Sand being blown by the wind from one place to another is an actual instance of erosion.
When the wind's force moves and displaces loose sand or other sediment particles, the process is known as wind erosion. Sand particles are picked up and carried by the wind as it sweeps across an open surface, where they impact with other items or surfaces.
Rocks, dunes, cliffs, and other geological structures can all be eroded over time as a result of the continuous movement and influence of wind-blown sand on the environment. Deserts and sandy ecosystems are mostly shaped by wind erosion on a global scale.
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A boy ties a stone to the end of a string which he then whirles above his head round a circular path of radius 15cm. if the stone makes 20 oscillations in 10 seconds calculate the angular and linear speeds of the stone.
Answer:
W = 12.568rads
V = 1.8852m/s
Explanation:
Data:
r = 15cm = 0.15m
t = 10s
Revolutions = 20
Frequency (F) = number revolutions/ time take complete it
F = 20 / 10 = 2Hz
Angular velocity (w) = 2 * 3.142 * F
Note: 3.142 = value of pi
W = 2*3.142*2 = 12.568 rads
Linear velocity (v) = w*r
V = 12.568*0.15 = 1.8852m/s
When the number of electrons striking the anode of an x-ray tube is increased, the ____ of emitted X-Rays increases.
1. density
2. frequency
When the number of electrons striking the anode of an x-ray tube is increased, the density of emitted X-Rays increases.
Option: 1
Explanation:
As the electron speed increases, the heat radiation also increases from thermionic emission, which causes more heat and more X-ray release. X-rays are produced by an a vacuum tube called X-ray tube that uses more voltage to make the electrons accelerate which the hot cathode releases to a high velocity.
This high speed electrons meets in a collision with a metal target which is the anode, and thus create the X-rays. So, the electron number available and the time period set for their release from the filament determines how many x-rays are produced from the anode. Hence, more the number of electrons striking the anode,the more is the emission of x-rays.
suppose an electrically charged ruler transfers some of its charge by contact to a tiny plastic sphere. will the ruler and the sphere attract or repel afterwards? explain your reasoning
The ruler and sphere, after the charge transfer, will acquire the same type of charge. As a result, they will repel each other as like charges repel in Electrostatics.
Explanation:In the field of Physics, the force between two electrically charged objects can be either attraction or repulsion. However, in this case where an electrically charged ruler transfers some of its charge by contact to a tiny plastic sphere, the two objects will repel each other. This phenomenon is based on the fundamental principle that like charges repel each other. After the transfer of charge, both the ruler and the sphere acquire the same kind of charge, hence they repel. This concept is a foundational part of the study of Electrostatics.
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The ruler and the sphere will repel each other after charge transfer because they will have the same type of charge, leading to a repulsive force in accordance with the principles of electrostatics and Coulomb's law.
When an electrically charged ruler transfers some of its charge to a tiny plastic sphere by contact, both objects will have the same type of charge, either positive or negative, depending on the ruler's initial charge.
According to the principle of electrostatics, like charges repel each other, meaning that the ruler and the sphere will repel each other after the charge transfer. This can be understood by considering that charges distributed on both objects are of the same sign, leading to a repulsive force between them.
For example, if a plastic ruler is rubbed with a cloth and acquires a negative charge (excess electrons), upon touching a neutral plastic sphere, some of these excess electrons will move to the sphere. This will leave both the ruler and sphere negatively charged, resulting in repulsion due to the interaction of like charges.
This is in accordance with Coulomb's law, which states that the electric force between two point charges is directly proportional to the product of the magnitude of the charges and inversely proportional to the square of the distance between the charges, and that like charges exert a repulsive force on each other.
Which subatomic particle has a negative charge? A) electron B) neutron C) nucleus D) proton
Answer:
A) electron
Explanation:
Matter consists of atoms. Each atom consists of three particles:
- The proton: the protons are located inside the nucleus of the atom. They have a mass of [tex]1.67\cdot 10^{-27}kg[/tex], and they have positive electric charge ([tex]+e=+1.6\cdot 10^{-19}C[/tex]). Protons are not fundamental particles, but they actually consists of three quarks (which are instead fundamental particles), in particular of 2 up quarks and 1 down quark.
- The neutron: neutrons are also located inside the nucleus. They have no electric charge, and their mass is similar to that of the proton (slightly larger). Neutrons consist of three quarks as well, in particular of 2 down quarks and 1 up quark.
- The electron: electrons are located outside the nucleus. They have a mass much smaller than protons (about [tex]9.11\cdot 10^{-31} kg[/tex]) and they have a negative electric charge, opposite to that of the proton ([tex]-e=-1.6\cdot 10^{-19}C[/tex]). The electron is a fundamental particle.
Therefore, the subatomic particle having a negative charge is
A) electron
An electron is the subatomic particle that has a negative charge. Electrons orbit the nucleus, which contains the protons and neutrons, and its negative charge helps to balance the positive charge of the protons.
Explanation:
The subatomic particle that has a negative charge is the electron. Subatomic particles, namely protons, neutrons, and electrons, make up atoms. Protons carry a positive charge and are found in the nucleus of the atom. Neutrons are neutral as they do not carry any charge and are also found in the nucleus. Electrons, which carry a negative charge, move in spaces around the nucleus known as energy levels or electron shells. The negative charge of the electron balances the positive charge of the protons, causing an atom to be neutral under normal conditions.
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8. Grass uses energy from the Sun
to grow. A cow eats grass so it
has energy to walk. You drink
milk from the cow so you have
energy to hit a ball. This makes
a loud sound and sends the ball
flying. In these steps, energy
keeps moving and changing.
What is this series of steps called?
® energy movement
® energy switching
© energy transfer
O energy conversion
Answer:
The correct option is D) energy conversion
Explanation:
As we all know, energy is neither created nor destroyed but is can be converted from one form to another.
For example, the chemical energy in food is converted into kinetic energy when we run or walk.
The changing of the energy is called energy conversion and the movement of the energy is called energy transfer.
Elements have the same number of ______ as you move from left to right
Answer:
protons
Explanation:
Answer:
Electron shells
Explanation:
The Richter scale measures the __ of an earthquake.
Answer: magnitude
Explanation: I just did it
The Richter scale measures the magnitude of an earthquake. The correct option is A.
The Richter scale is a logarithmic scale for measuring earthquake magnitude, which is a quantitative estimate of the amount of energy generated during an earthquake.
The Richter scale, developed by Charles F. Richter in 1935, provides a numerical value to earthquakes based on the amplitude of seismic waves measured by seismographs.
The Richter scale is logarithmic, which means that each whole number rise reflects a tenfold increase in ground motion amplitude and about 31.6 times greater energy release.
As a result, a higher Richter scale value signifies a more violent and damaging earthquake with greater potential for damage and devastation.
Thus, the correct option is A.
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Your question seems incomplete, the probable complete question is:
The Richter scale measures the __ of an earthquake.
A. Magnitude.
B. Density.
C. Direction.
D. type.
describe the relationship between the direction of the velocity vector and the direction of the acceleration for a body moving in a circle at constant speed
The direction of the velocity vector in circular motion at constant speed is tangent to the circle, while the acceleration vector, known as centripetal acceleration, points toward the center of the circle.
Explanation:In the specific scenario of a body moving in a circle at a constant speed, the relationship between the direction of the velocity vector and the direction of the acceleration vector is vital to understand. The velocity vector is always tangent to the circle, which means it is drawn along the direction that the body is moving at any point on the circle. The acceleration vector, on the other hand, points toward the center of the circle; this is known as centripetal acceleration. Thus, while the speed remains constant, the direction of the velocity is continuously changing as the body moves along the circular path, resulting in an acceleration towards the center of that path.
20 POINTS!!!!!!!!
An electromagnet is a temporary magnet made by coiling wire around an iron core which becomes a magnet when an electric current flows through the wire.
How could the strength of an electromagnet be increased?
A) Use fewer coils of wire around the nail.
B) Use more coils of wire around the nail.
C) Use a battery with less voltage.
D) Use a smaller nail.
USE MORE COILS OF WIRE AROUND THE NAIL
Explanation:
To increase the strength of an electromagnet, the following strategy is adopted in order to have better efficiency.
The best method which suits for increasing the strength of electromagnet is to increase the number of turns around the nail.
If we increase the number of turns up to a specific value the magnetizing property of magnet is enhanced. So that to increase the strength , add more number of turns to the existing turns of coil.
a swing has a period of 3 seconds. what is it’s frequency?
f = 1/3 swings per second
or
f = 1 swing per 3 seconds
The frequency of a swing with a period of 3 seconds is approximately 0.33 Hz, calculated using the relationship f = 1/T.
The question is asking us to calculate the frequency of a swing given its period. The known period of the swing is 3 seconds. To find the frequency, which is the number of cycles the swing completes in one second, we can use the relationship between period (T) and frequency (f), which is f = 1/T. Thus, for a period of 3 seconds, the frequency is simply f = 1/3 seconds = 0.333... cycles per second, or approximately 0.33 Hz when rounded to two decimal places.
When you are running around a track, what kind of energy are you using?
Answer:
kinetic energy
Explanation:
we are using chemical energy in our bodies to produce movement, whitch in turn convents to warmth.
Final answer:
While running around a track, the main type of energy used is kinetic energy, the energy of motion. Gravitational potential energy also plays a role when changing elevation. Energy from food provides the caloric input, but losses to heat and friction during digestion and running result in less energy available for motion.
Explanation:
When you are running around a track, the kind of energy you are using is primarily kinetic energy. This is the energy that an object possesses due to its motion. As you exert force on the ground, for instance when a sprinter's foot pushes off the track, kinetic energy increases, which prevents the runner from slowing down. This aspect of energy in motion is known as work being done on the runner by the force exerted through the ground.
Additionally, when a runner is starting or going uphill, potential energy, specifically gravitational potential energy, comes into play. This type of energy is relative to the position of the runner's body and the Earth's gravitational pull. As they ascend, they gain potential energy, which can be converted into kinetic energy as they descend.
Which of these can be considered a system? Check all that apply.
O a computer
O a car
O a bicycle pedal
O a pencil
O a coffeemaker
Answer: A b e
Explanation:
Systems are a computer, a car, and a coffeemaker. Therefore, options A, B, and D are correct.
A system refers to a well-defined portion of the physical universe that is the subject of study or analysis. It is a fundamental concept used to simplify and focus investigations into the behavior and interactions of objects or components within a specific region of interest.
A physics system can consist of one or more physical objects, particles, or components that are the primary subjects of study. These components are chosen based on the specific physics principles or phenomena being investigated. Therefore, options A, B, and D are correct.
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Acetylene gas (C2H2) is used in welding torches. When it reacts with oxygen, it produces carbon dioxide (CO2) and steam (H2O). The reaction can be described by the equation:
2C2H2 + 5O2 ➔ 4CO2 + 2H2O. How much mass of C2H2 is needed to react with 68.1 g of O2 to produce 75.0 g of CO2 and 15.35 g of steam?
Explanation:
First thing to understand is how you can manipulate the Ideal Gas Law to your needs. since [tex]\mathrm{PV}=\mathrm{nRT}[/tex] at a constant temperature, [tex]\mathrm{PV} / \mathrm{n}=\mathrm{RT}=[/tex]constant. That means,
[tex]\mathrm{P}_{1} \mathrm{V}_{1} / \mathrm{n} 1=\mathrm{P} 2 \mathrm{V} 2 / \mathrm{n} 21[/tex]
If we say that subscript 1= oxygen and subscript 2= acetylene, then for acetylene,[tex]P 2=(P I V 1 \cap 2) /(\sqrt{2} n 1)[/tex]
Next, we realize from the reaction equation given above that 2 moles of acetylene (n 2 ) react with 5 moles of oxygen (n1). We can plug that right into our equation for P 2, along with the rest of the conditions given in the question:
[tex]P 2=(P 1 V 1 \cap 2) /(V 2 n 1)=\left[(155 a t m)^{*}(5.00 L)^{*}(2 m o l e s)\right] /\left[(25.00 L)^{*}(5 \text { moles }]\right]=124 \text { atm }[/tex]
Answer:
22.13g of C2H2
Explanation:
Step 1:
The balanced equation for the reaction. This is given below:
2C2H2 + 5O2 ➔ 4CO2 + 2H2O
Step 2:
Determination of masses of C2H2 and O2 that reacted from the balanced equation. We need to obtain the mass of C2H2 and that of O2 that reacted based on the chemical equation, as it will enhance the process of obtaining the desired result. This is illustrated below:
2C2H2 + 5O2 ➔ 4CO2 + 2H2O
Molar Mass of C2H2 = (12x2) + (2x1) = 24 + 2 = 26g/mol
Mass of C2H2 from the balanced equation = 2 x 26 = 52g
Molar Mass of O2 = 16x2 = 32g/mol
Mass of O2 from the balanced equation = 5 x 32 = 160g
From the balanced equation,
52g of C2H2 reacted with 160g of O2.
Step 3:
Determination of the mass of C2H2 needed to react with 68.1g of O2.
From the balanced equation,
52g of C2H2 reacted with 160g of O2
Therefore, Xg of C2H2 will react with 68.1g of O2 i.e
Xg of C2H2 = (52 x 68.1)/160
Xg of C2H2 = 22.13g
From the calculations made above, 22.13g of C2H2 is needed to react with 68.1 g of O2 to produce 75.0 g of CO2 and 15.35 g of steam
is is false or true The closer objects are, the stronger the gravitational force between them.
Answer:
TRUE
Explanation:
The gravitational force between two objects becomes weaker if the two objects are moved apart and stronger if they are brought closer together; that is, the force depends on the distance between the objects
A box sliding down a hill going 3m/s accelerates at 2m/s2. How fast is going 4 seconds?
Final answer:
The box sliding down the hill with an initial velocity of 3 m/s and accelerating at 2 m/s² will be going 11 m/s after 4 seconds.
Explanation:
The question involves a box sliding down a hill with an initial velocity of 3 m/s, which then accelerates at 2 m/s². To find out how fast the box will be going after 4 seconds, we apply the kinematic equation:
v = u + at,
where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time. Plugging in the values, we get:
v = 3 m/s + (2 m/s² * 4 s) = 3 m/s + 8 m/s = 11 m/s.
The box will be going 11 m/s after 4 seconds.
Two equal and opposite charges separated by a distance, d, experience an attractive force, F. If each charge is doubled in magnitude, what should be the new distance between them so that the force remains unchanged?
If the each charge is doubled in magnitude and force remains unchanged then the distance between the charged particle is four times the original distance.
Explanation:
The force between two charged objects are shown by Coulomb's law.
In the scalar form, this law is represented as:
[tex]F = k \frac{q_1 q_2}{d^2}[/tex]
where,
k = coulomb's constant
q₁ and q₂ are the magnitude of charged objects
d = distance between the charges.
According to the question,
Case1:
charge on object 1 = +q₁
Charge on object 2 = -q₂
Distance between the charges = d
[tex]Force, F = k\frac{+q_1 X -q_2}{d^2} \\\\F = k\frac{-q_1q_2}{d^2}[/tex]
Case 2:
Charge on object 1 = +2q₁
Charge on object 2 = -2q₂
Force between the objects is same
New distance, dₓ = ?
If both the forces are equal then,
[tex]k\frac{-q_1q_2}{d^2} = k\frac{+2q_1 X -2q_2}{d_x^2} \\\\[/tex]
On simplifying the equation we get,
[tex]\frac{-1}{d^2} = \frac{-4}{d_x^2} \\\\d_x^2 = 4d^2[/tex]
So, if the each charge is doubled in magnitude and force remains unchanged then the distance between the charged particle is four times the original distance.
If the charges are doubled and the force is to remain the same, the new distance between the charges should be the initial distance multiplied by the square root of 2.
Explanation:The force experienced by two equal and opposite charges separated by a distance d can be calculated using Coulomb's Law: F = k*q1*q2/d^2, where F is the force, k is a constant, q1 & q2 are the charges, and d is the distance between them. If the magnitude of each charge is doubled, the equation becomes F = k*2q1*2q2/d'^2, where d' is the new distance. If we want the force to remain unchanged, we have the equation: k*q1*q2/d^2 = k*2q1*2q2/d'^2. Solving for d', we get d' = sqrt (2) * d. Therefore, the new distance between the charges should be sqrt (2) times the initial distance to keep the force the same when the magnitude of the charges is doubled.
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what has to happen for a feather and ball to fall at the same time
Of the following telescopes, which one would best be able to pierce through the Earth's atmosphere and function on the surface of the Earth?
Answer:
D
Explanation:
The Earth's atmosphere interferes with radio waves less than any other wavelength, so the best kind of telescope to build on the Earth's surface would be a radio telescope. Although visible light telescopes are often built on Earth, they are usually put as high up as possible, such as on mountaintops, where there is less atmosphere to get in their way. Radio telescopes are usually put as far down as possible, such as in valleys, to block out human-generated radio signals coming from other parts of the surface of the Earth.
The telescope that would best be able to pierce through the Earth's atmosphere and function on the surface of the Earth is radio telescope. The correct option is A.
What is radio telescope?Radio telescopes detect and amplify radio waves from space, converting them into signals that astronomers can use to learn more about the Universe.
Because the Earth's atmosphere interferes with radio waves less than with other wavelengths, a radio telescope would be the best type of telescope to build on the Earth's surface.
Although visible light telescopes are frequently built on Earth, they are typically placed as high up as possible, such as on mountaintops, where there is less atmospheric interference.
Radio telescopes are typically placed as low as possible, such as in valleys, to block out human-generated radio signals from other parts of the Earth's surface.
Thus, the correct option is A.
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Your question seems incomplete, the missing options are:
A. an x-ray telescope
B. an infrared telescope
C. a radio telescope
D. a visible-light telescope
If the vector below is multiplied by 2, what will be its end point?
Answer:
If the scalar is negative, then multiplying a vector by it changes the vector’s magnitude and gives the new vector the opposite direction. For example, if you multiply by –2, the magnitude doubles but the direction changes. We can summarize these rules in the following way: When vector A is multiplied by a scalar c
Explanation:
Answer: (4, -2)
Explanation:
The vector shown in the image is (2, -1)
2. Now, the scalar multiplication for vectors works in the next way:
3. for a scalar c and a vector (x,y)
4. c*(x,y) = (c*x, c*y)
5. In our case, the scalar is 2, and the vector is (2, -1)
6. 2*(2, - 1) = (2*2, -1*2) = (4, -2)
Suppose a truck has a momentum of 40,120 kg • meters per second and a mass of 1,180 kg. What is the truck’s velocity?
4.7 × 107 meters per second
47 × 107 meters per second
34 meters per second
3.4 meters per second
Final answer:
To find the velocity of a truck given its momentum and mass, divide the momentum by the mass; the truck has a velocity of 34 meters per second.
Explanation:
The question is asking us to calculate the velocity of a truck given its momentum and mass. The formula to find velocity when momentum and mass are known is velocity = momentum / mass.
Plug in the values to get the velocity: velocity = 40,120 kg·m/s ÷ 1,180 kg = 34 m/s. Therefore, the velocity of the truck is 34 meters per second.
To find the velocity of a truck given its momentum and mass, divide the momentum by the mass; the truck has a velocity of 34 meters per second.