Water on the kitchen floor at home is considered a safety hazard.
What is the average speed of an object that travels 6.00 meters north in 2.00 seconds and then travels 3.00 meters east in 1.00 second
Answer:
Answer is 3 because 6 / 2 = 3 Speed of eastward passage: 3 / 1 = 3 Speed of whole trip: (6 + 3) / (2 + 1) = 3
Explanation:
The current in a 100-w bulb connected to a 120-v source is
Answer:
5/6 amps or .833 amps
Explanation:
W = VI
100 = (120)I
I = 100/120 = 5/6
A 30.0 kg object has an initial velocity of 7.00 m/s and a final velocity of 10.0 m/s. The work done on the object is ___________ J. (Report the answer to three significant figures.)
The work done on the object during this motion is 765 J.
The given parameters;
mass of the object, m = 30 kginitial velocity of the object, u = 7 m/sfinal velocity of the object, v = 10 m/sThe work done on the object is determined by applying work-energy theorem.
W = ΔK.E
W = ΔK.E = ¹/₂m(v² - u²)
W = ¹/₂ x 30(10² - 7²)
W = 765 J
Thus, the work done on the object during this motion is 765 J.
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What two minerals would be most useful as grains on sandpaper
Diamond Abrasive and Mineral Polisher are the most useful as grains on sandpaper.
What is Sandpaper?Sandpaper is also known as glasspaper. It is used for a type of coated abrasive consisting of sheets of paper or cloth with abrasive material glued to one face.
Sandpaper is produced in a variety of grit sizes which are used
1. Remove material from surfaces to make them smooth or to remove a layer of material
2. Surface roughening
Diamond abrasives and mineral polishers are some examples of sandpapers used as a grain. Diamond abrasive powder or crushed diamond used as an abrasive is also known as diamond powder. A mineral polisher is a mineral that forms or finishes a workpiece by rubbing it.
Thus, Diamond Abrasive and Mineral Polisher are the most useful as grains on sandpaper.
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Answers assuming the bag does not break, what will be its volume at the top of a mountain where the pressure is 453 mmhg and the temperature is 8.00 ∘c?
The question is about physics and refers to the ideal gas laws. From the data provided, we know that the volume of the bag at the top of the mountain will change due to a decrease in pressure and temperature. By using the ideal gas laws equations, we can find the final volume of the bag.
Explanation:The question is inquiring about the change in volume for a bag when the pressure and temperature change from the base of the mountain to the top. Here, we will use the ideal gas laws which state that volume is directly proportional to temperature and inversely proportional to pressure. Given that the initial pressure is 760mmHg and the final pressure is 453mmHg and that the temperature fell from an average room temperature of 25°C (or 298.15 K) to 8°C (or 281.15 K), we can use these principle to solve the question. Note that pressure is given in mmHg and needs to be converted to the same unit.
You can calculate the change in the bag's volume using the relationship between the initial and final state: V1/T1 = V2/T2 where V1 is the initial volume and V2 is the final volume. Considering the pressure changes, you could use another ideal gas law equation that defines the relationship between pressure and volume: P1V1=P2V2, where P1 and P2 are the initial and final pressures respectively.
By applying these formulas, you can calculate the change in volume of the bag. Have in mind that this is an approximation since real gases don't always behave as ideal gases, especially under extreme conditions.
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If you are standing on the floor, motionless, what are the forces that act on you?
If you are standing on the floor, motionless, the forces that act on you are:
.The force of gravity acts downward
.The force the floor exerts upward.
What is force of gravity?
The force of gravity is a force that pulls a body towards the centre of the earth or any other physical body with mass.
Gravity determines how fast objects move towards each other. The average gravitational pull of the Earth is 9.8 meters per second squared (m/s²).
What is the force the floor exerts?
It is the normal reaction in the upward direction.i.e the normal force. The force the floor exerts in repulsion as a result of the weight of the individual standing on it.
Note that, these two forces are of equal magnitude and in opposite directions, so they balance each other. Hence, the person standing is at equilibrium.
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Final answer:
When standing still, you experience the force of gravity pulling you down and the normal force from the floor pushing you up. These forces are equal and opposite, creating a static equilibrium situation, as described by Newton's third law.
Explanation:
When you stand still on the floor, two primary forces act on you: the force of gravity, which pulls you downward, and the normal force exerted by the floor, which pushes you upward. These two forces are indeed equal and opposite when you are motionless, according to Newton's third law of motion. Specifically, this law states that for every action there is an equal and opposite reaction. Therefore, the floor exerts an upward normal force on your feet that is equal in magnitude but opposite in direction to the force of gravity acting downward on you. This situation is an example of static equilibrium, where all the forces on an object cancel each other out, resulting in no net force and no acceleration.
The normal force is a reactive force; it responds to the compression caused by your weight and the gravity force. As long as you remain standing still, with no other external forces acting on you, these forces will remain in balance, keeping you stationary on the floor.
A player holds two baseballs a height (h) above the ground. He throws one vertically upward at speed (vo) and the other one vertically downward at the same speed. Determine the speed of each ball when it strikes the ground and the difference between their times of flight.
Final speeds of both baseballs will be the same when they hit the ground, calculated by the kinematic formula, and the difference in time of flight is twice the time it takes for the upward-thrown ball to reach its highest point and start falling.
When a player throws one baseball vertically upward at speed (vo) and another vertically downward at the same speed, the formula to calculate the final velocity (v) at the point of impact, ignoring air resistance, is given by v = √(v₀^2 + 2gh), where g is the acceleration due to gravity (9.81 m/s²) and h is the height from which the balls were thrown.
The ball thrown downwards will have an initial speed of v₀ downwards; therefore its final speed will be v = v₀ + √(2gh).
The ball thrown upwards will reach a velocity of zero before changing direction and falling back down, thus its final speed will converge on the same value as a ball thrown downwards (ignoring air resistance and the initial upward speed).
The difference in time of flight is due to the time it takes for the upward thrown ball to stop and start falling, which is t = v₀/g.
So, the upward thrown ball will take an additional 2t (up and down) time to hit the ground compared to the downward thrown ball.
Utilizing the kinematic equations for projectile motion can aid in solving for these values.
The electrons that produce the picture in a TV set are accelerated by a very large electric force as they pass through a small region in the neck of the picture tube. This region is 1.5 cm in length, and the electrons enter with a speed of 1 × 105 m/s and leave with a speed of 2.5 × 106 m/s. What is their acceleration over this 1.5 cm length?
if a four engine jet accelerates down the runway at 2.0m/s^2 and one of its engines suddenly fails how much acceleration will the remaining three produce
If one of the four engines suddenly fail, so this means that we only get 3 / 4 of the original force. Since force is the product of mass and acceleration and mass is constant, therefore we get 3 / 4 of the original acceleration.
So the remaining acceleration is:
a = (2.0 m/s^2) * (3 / 4)
a = 1.5 m/s^2
Calculate the minimum and maximum angular diameters of the sun, as seen from mars.
The angular diameter can be calculated by using the formula,
Angular diameter = 57.3 x physical diameter / distance.
The physical diameter of the sun = 1.4 x 10^6 km.
The minimum distance of Mars from Sun = 205 x 10^6 km
The minimum angular diameter of the Sun as seen from Mars is:
Angular diameter = 57.3 x physical diameter / distance = 57.3 x (1.4 x 10^6 km / 205 x 10^6 km) = 0.39 degrees.
The maximum distance of Mars from Sun = 249 x 10^6 km.
The maximum angular diameter of Sun as seen from Mars is,
Angular diameter = 57.3 x physical diameter / distance = 57.3 x (1.4 x 10^6 km / 249 x 10^6 km) = 0.32 degrees
To calculate the minimum and maximum angular diameters of the Sun as seen from Mars, use the small-angle formula using the angular diameter of the Sun and the distances to Mars and Earth.
Explanation:To calculate the minimum and maximum angular diameters of the Sun as seen from Mars, we need to use the small-angle formula. The angular diameter of the Sun is about 0.5°. Mars has an average distance of 227 million kilometers from the Sun, and Earth is about 1 AU from the Sun. Using the small-angle formula, we can relate the angular diameter, the linear diameter, and the distance:
linear diameter = distance x angular diameter
For the minimum angular diameter, we use the distance from Mars to the Sun:
minimum angular diameter = 227 million km x 0.5° / 1 AU
For the maximum angular diameter, we use the distance from Earth to the Sun:
maximum angular diameter = 1 AU x 0.5° / 1 AU
By performing the calculations, the minimum angular diameter of the Sun as seen from Mars is approximately 0.96° and the maximum angular diameter is also approximately 0.5°.
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On a typical seismogram, _____________ will show the highest amplitudes.
a. p waves
b. surface waves
c. s waves
d. body waves
On a typical seismogram, surface wave will show the highest amplitudes. The correct option is b.
What is seismogram?A seismograph produces a graph known as a seismogram. It is a log of the ground motion over time at a measurement station.
Seismograms typically capture motions along three cartesian axes, with the x and y axes parallel to the surface of the Earth and the z axis perpendicular to it.
Earthquake location and magnitude are found via seismograms. It is possible to think of an earthquake's magnitude as changing depending on how much energy is released at the rupture point.
Geologists utilize a seismometer, sometimes known as a seismograph, to measure and capture seismic waves. Surface waves often have the highest amplitudes on a seismogram.
Thus, the correct option is b.
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If a space craft that seems to be motionless in deep space is given some type of quick push what will happen?
A: the space craft will not move due to air resistance
B: the space craft will not move because it only works on earth
C: the space craft will move and then slowly come to a stop on it own
D: the space craft will move and will not stop until it is stopped by an equal and opposite force
Final answer:
In deep space, d) a spacecraft given a quick push will keep moving indefinitely until an equal and opposite force stops it, in accordance with Newton's First Law of Motion. This is due to the lack of air resistance and minimal gravitational pull in deep space.
Explanation:
If a spacecraft that seems to be motionless in deep space is given some type of quick push, the correct answer is D: the spacecraft will move and will not stop until it is stopped by an equal and opposite force. This outcome is dictated by Newton's First Law of Motion, often referred to as the law of inertia. According to this law, in the absence of an external force, an object at rest remains at rest, and an object in motion continues in motion with the same speed and in the same direction. Space, particularly deep space, has neither air to cause resistance nor sufficient gravitational pull from nearby masses to significantly alter the craft's course, assuming it's far enough from any massive body.
For example, spacecraft in interplanetary space operate for the most part without continuous thrust. They rely on brief engine fires to make adjustments to their trajectory or speed and then continue on their course due to the lack of resistance. Similarly, an asteroid travelling through space distant from gravitational forces will not slow down unless acted upon by another force.
Which is not one of Aristotle’s four elements
Water
Fire
Earth
Oxygen
Answer:
Option D. Oxygen
Explanation:
Aristotle believed that there were four elements Earth, water, fire and air with which everything is made up of.
Stars can not be made out of any of the four elements.
Therefore, in the given options Oxygen is the element which is not one of Aristotle's four elements.
Option D. Oxygen is the answer.
What is the approximate angular diameter of venus when it is a very slim crescent? (measure full diameter of the planet, not just the crescent)
a. 15â
b. 30â
c. 60â
d. 60â?
How is the acceleration of an object in uniform circular motion constant?
Uniform circular motion refers to the motion of an object moving in a circular path at a constant speed. Despite the constant speed, the object actually experiences constant acceleration due to its constant change in direction, which is coined as Centripetal Acceleration.
Explanation:Uniform circular motion is a principle in physics that describes the motion of an object traveling in a circular path at a constant speed. Although the speed is steady, the acceleration is not zero. This is because acceleration is not just the rate of change in speed, but also encompasses change in direction. Despite the constant speed in uniform circular motion, the direction of the object is always changing, hence creating acceleration.
Centripetally, the acceleration is directed towards the center of the circle along which the object is moving. The continuous change in direction results in a constant acceleration. This force that keeps the object moving along the circular path is known as the Centripetal Force. Therefore, even with constant speed, the continuous change in direction in a circular path results in constant acceleration, known as the Centripetal Acceleration.
As a concrete example, think about when you're driving and take a turn at a constant speed. You can feel yourself being pulled to the side, an effect of the centripetal acceleration.
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Which of these is true about the possible number of compounds that can be formed?
There is an infinite number of possible compounds because some compounds are not reactive.
There is an infinite number of possible compounds because the number of elements is unlimited.
There is a finite number of possible compounds because the number of elements is limited.
There is a finite number of possible compounds because all compounds are reactive.
The correct statement for the possible number of compounds that can be formed is that there are a finite number of possible compounds because the number of elements is limited. Hence, option C is correct.
What is a Compound?Any material made up of similar molecules with atoms from two or more distinct chemical elements is referred to as a chemical compound. Atoms from more than 100 distinct chemical elements, both in their pure forms and when mixed to form chemical compounds, make up all objects in the universe.
A sample of a pure element contains only the atoms that are distinctive of the that element, and each element's particles are distinct. For instance, the atoms that make up carbon differ from the ones that make up iron, that differ from those that make up gold. Every element has a distinctive symbol that is made up of one, two, or differentiates between three that either come from the element's present name or from its original (typically Latin) name.
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“Will the real atomic model please stand up?,” why did J.J. Thomson experiment with cathode ray tubes?
The value of acceleration due to gravity on pluto is about 0.61 meters\second. How much will an object that weighs 250 newtons on earth weigh on pluto?
Answer: B.
15.6 newtons
Explanation: edmentum
How much do the all stars make on sytycd?
Is a charge indicated on the neutral atoms if yes where is it located?
Neutral atoms carry no charge because they have equally balanced numbers of positively charged protons and negatively charged electrons. If an atom becomes an ion, it either gained or lost electrons, which affects its overall charge resulting in either a positive or negative charge.
Explanation:In neutral atoms, the number of positively charged protons and negatively charged electrons are equal. This balance gives rise to the atom's overall neutral net charge. The charge in an atom is defined by the equation: Atomic Charge = number of protons - number of electrons. If an atom gains or loses electrons, it ceases to be neutral and becomes an ion.
For instance, an atom that gains electrons has a negative charge and is called an anion. An atom that loses electrons, on the other hand, has a positive charge and becomes a cation.
Should the balance be disturbed, for instance, if a neutral sodium atom loses an electron, it would form a cation with a 1+ charge. On the contrary, if a neutral oxygen atom acquires two electrons, it would form an anion with a 2- charge.
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In comparing an electric circuit to a roller coaster, which part of the roller coaster would be equivalent to a battery?
PLEASE HELP 100 POINTS!!
Solutions with high pH values have which of these properties?
A. tastes sour
B. turns litmus paper red
C. feels slippery
D. gives off hydrogen gas when reacted with metal
Hi there!
The answer would be C. feels slippery. This is because at a base solution brings out and breaks down acids and oils which causes it to feel slippery to the touch.
Your friend, ASIAX
Explain why the shortening velocity became slower as the load became heavier in this experiment. how well did the results compare with your prediction?
The shortening velocity is the rate at which a muscle shortens during a contraction. The force of a muscle contraction decreases with speed.
What is shortening velocity?The pace at which a muscle shortens while contracting to lift a load is referred to as the shortening velocity. Only with a light load may the shortening velocity be increased to its maximum. The shortening velocity is at its maximum when the load is light.
When lifting a heavy object, the muscle moves more slowly as it slows down as it lifts the object. Muscles must exert additional internal effort to distort their tissue and, in particular, to overcome the inertia brought on by their internal mass in order to do outward work. The contribution of a muscle's internal bulk to its mechanical output has, however, hardly ever been researched.
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Which would be the most reliable source of information to use for a history report
Answer:
An encyclopedia.Explanation:
Encyclopedias are written by an academic source, which transform them in a reliable scholarly source.
On the other hand, a magazina article is written and corrected by an editorial which is not academic in most of the cases. Similarly, a newspaper is based in editors about different topic outside the academica environment.
Finally, a TV show is the least trustworthy of the choices, because must of the time, TV shows are made to just entertain to increase their raitings.
Therefore, the right answer is an encyclopedia.
Which of the following can occur during an earthquake? Select all that apply.
Crust can fold or wrinkle
Part of the crust may sink under the ocean
Sections of the crust are demolished into clouds of dust
Cliffs and cracks form
The first and fourth answers work but so does the third one. It just depends on where it occurs.
An earthquake is a sudden, violent shaking of the ground brought on by the movement of rocks located deep within the earth. Thus option A, D is correct.
What can occur during an earthquake?Earthquakes can disrupt gas, electricity, and telephone services, cause buildings and bridges to collapse, and occasionally create landslides, avalanches, flash floods, fires, and tsunami.
As a result of earthquakes, landslides, and other ground movement, things can move, fires can break out, tsunamis can occur, and more. Even a mild earthquake has the potential to cause home goods to move and pipes to burst.
Therefore, it is uncommon for ground vibrations to cause an earthquake's deaths or injuries. Falling objects, flying glass, and collapsing walls triggered by ground shaking are to blame for the bulk of earthquake-related injuries and fatalities.
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What is the volume of a marble that has a mass of 3 g and a density of 2.7 g/ml?
The volume of the marble is 1.11 cubic meter.
We have a marble whose mass is 3 g and density is 2.7 g/[tex]m^{3}[/tex].
We have to determine its volume.
What is the relation between the mass and density of a solid body?The relation between the mass and density of any solid is given by -
M = ρV
Where -
M - mass of body
ρ - density of body
V - volume of body
According to the question -
M = 3 g
ρ = 2.7 g/[tex]m^{3}[/tex]
Using the formula discussed above, we get -
M = ρV
V = [tex]\frac{M}{\rho}[/tex] = [tex]\frac{3}{2.7}[/tex] = 1.11 cubic meter
Hence, the volume of the marble is 1.11 cubic meter.
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NEED HELP ASAP!!!!! IN MIDDLE OF TEST RN HELP PLZ
In the formula vy = ayt, what is the value of ay for an object in projectile motion?
1)–9.8 m/s2
2)0 m/s2
3)m/s2
4)1.0 m/s2
An object has an acceleration of 6.0 m/s/s. if the net force acting upon this object were doubled, then its new acceleration would be _____ m/s/s.
Christopher can paddle a canoe in still water at 8 km/h. how successful will he be at canoeing upstream (against the current) in a river that flows at 8 km/h?
Christopher will not make any progress upstream. From the point of view of his friends standing on the riverbank, he'll remain at one point, motionless except for his furious paddling motions.
Given data:
The speed of Christopher in still water is, v = 8 km/h.
The speed of river is, u = 8 km/h.
The upstream is the motion of any object (say boat) in a river, which is in the direction opposite to the direction of flow of stream or river. And the expression for the upstream as per the given problem is,
upstream = v - u
So, on substituting the values we get,
upstream = 8 - 8
upstream = 0 km /h.
Thus, we can conclude that Christopher will not make any progress upstream. From the point of view of his friends standing on the riverbank, he'll remain at one point, motionless except for his furious paddling motions.
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