Answer:
acceleration is the rate of change of velocity
Which of the following explains the process of radiation? Question 3 options: when heat gets transferred through objects that are touching when the measurement of heat in the atmosphere goes down when heat gets transferred through electromagnetic waves that move through space when heat gets transferred through a liquid or a gas
Answer:
the answer is when heat gets transfered through objects that are touching when the measurement of heat in the yeans
Explanation:
The Option that explains the process of radiation is : ( C ) when heat gets transferred through electromagnetic waves that move through space
Radiation is the transfer of energy through space in the form of electromagnetic waves or as subatomic particles. Energies transferred during radiation move at the speed of light.
During conduction and convection heat gets transferred through objects that touch each other while during radiation the objects do not have to be in contact for energy to be transferred.
Hence we can conclude that The Option that explains the process of radiation is when heat gets transferred through electromagnetic waves that move through space
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A circuit has a voltage drop of 60.0 V across a 120.0 resistor that carries a current of 0.500 A. What is the power conducted by the resistor? Use P = VI.
A.
7200 W
B.
60.0 W
C.
2.00 W
D.
30.0 W
Answer:
Power, P = 30 W
Explanation:
We have,
Voltage drop of a circuit is 60 V
Resistance of the resistor is 120 ohms
Current across the circuit is 0.5 A
It is required to find the power conducted by the resistor. Power conducted by a resistor is given by :
[tex]P=VI[/tex]
V and I are voltage and current
[tex]P=60\times 0.5\\\\P=30\ W[/tex]
So, the power conducted by the resistor is 30 watts.
Answer:
D. 30.0 W
Explanation:
Quiz Taken
What happens to the magnetic force as the distance between two magnetic poles decreases
It remains constant
It decreases
It increases
It decreases then increases.
Answer: It will increase
The magnetic force increases as the distance between two magnetic poles decreases due to the greater strength of the magnetic field when closer together.
As the distance between two magnetic poles decreases, the magnetic force increases. This is because the strength of the magnetic field from a magnet decreases with distance. When two magnetic objects are brought closer together, the field strength at each object due to the other's pole becomes greater, which results in a stronger magnetic force between them. The relationship between magnetic force and distance is similar to that of electric forces and can be thought of in the same way as Coulomb's Law for electric charges, where the force decreases with the square of the distance between the charges.
In practical terms, when you bring a magnet closer to a piece of iron, the magnetic potential energy of the system decreases because the magnet is moving to a lower potential energy state as it is attracted to the iron. Conversely, if you push two repelling magnets together, their magnetic potential energy increases because work is done against the repulsive force.
Definition: This is a solution that will hold no more solute
Answer:
Supersaturated Solution (im not sure what your question was but if you're looking for the term of the definition then it should be supersaturated solution)
Explanation:
Why has the study of genetic differences in intelligence been so controversial?
A.
Genetics has no role in intelligence.
B.
The studies didn’t really measure differences in genetics.
C.
The idea of genetic differences has often been used to justify racial discrimination.
D.
All of the above
The controversy over genetic differences in intelligence primarily relates to the misuse of genetic arguments for racial discrimination and the oversight of environmental influences on intelligence.
Explanation:The study of genetic differences in intelligence has been controversial due to several factors. The primary concern arises from the historical use of genetic arguments to justify racial discrimination. These views, although scientifically refuted, have at times resurged, as in the case of 'The Bell Curve'. Notably, the controversy arises from interpretations that link genetics and race with intelligence without accounting for the significant influence of environmental variables. Additionally, research has shown a closing of IQ gaps with increased access to education, pointing to nurture's critical role in intelligence development. The persistence of the idea that intelligence could be predetermined by race without adequate consideration of environment and socioeconomic factors contributes to the ongoing debate.
Moreover, there is a recognition that intelligence is affected both by genetics and environment, with environmental influences shaping the manifestation of cognitive abilities. Twin studies show a genetic component to intelligence, but conflict theorists note that IQ tests can be biased and do not always offer a fair assessment of a person's intellectual capabilities, reinforcing the complex interplay of genetics, environment, and social factors in the development of intelligence.
A 2.0-kg ball rolls to the right at 3.0 m/s. A 4.0-kg ball rolls to the left at 2.0 m/s . What is the momentum of the system after a head-on collision of the two balls?
Answer:
Final momentum after a head on collision is -2kgm/s
Explanation:
One ball moves to the right and the other moves opposite and momentum is a vector quantity so that considering the direction
Initial momenta are P₁=2x3=6kgm/s P₂=4x(-2)=-8kgm/s
Final momentum is the vector sum of P(final)= 6-8= -2 kgm/s
The final momentum after a head-on collision is -2kg-m/s if the 2.0-kg ball rolls to the right at 3.0 m/s. A 4.0-kg ball rolls to the left at 2.0 m/s.
What is mass?A tangible body's mass is the amount of matter it possesses. It's also a metric of inertia or the resistance to velocity when a net force is exerted.
It is given that:
A 2.0-kg ball rolls to the right at 3.0 m/s. A 4.0-kg ball rolls to the left at 2.0 m/s.
As we know,
Momentum = mass×velcoity
Given that momentum is a vector number and that one ball goes to the right while the other moves in the opposite direction
Initial momenta:
P = 2×3
P = 6 kg-m/s
p = 4×(-2)
p = -8 kg-m/s
Final momentum = The vector sum of P(final)
= 6 - 8
= -2 kg-m/s
Thus, the final momentum after a head-on collision is -2kg-m/s if the 2.0-kg ball rolls to the right at 3.0 m/s. A 4.0-kg ball rolls to the left at 2.0 m/s.
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You poll students on whether they prefer hotdogs, chicken fingers, salad, or
spaghetti for lunch. Which graph would you use to show your results?
A. Bar graph
B. Line graph
C. Cumulative frequency graph
D. Histogram
SO
Answer:
A. Bar Graph
Explanation:
It is easier to see the data.
We would use A)Bar graph to show our results.
What is a bar graph?A bar graph can be described as a chart or a graphical representation of data, portions, or numbers the usage of bars or strips. Bar graphs are used to compare and evaluate numbers, frequencies, or different measures of wonderful categories of statistics.
What are the types of bar graphs?vertical, horizontal, double, multiple, stacked,bar-line bar graphs.Learn more about Bar graphs here: https://brainly.com/question/24741444
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It is important to wear protective equipment in both practice and games.
Please select the best answer from the choices provided.
OT
OF
Answer:
OT
It is important to wear protective equipments during games and practices.
Explanation:
Practice is a review of what is about to happen in some time to come and with practice ,the future can be trusted.
During practice it is very important to use protective gears or equipments because without them, injuries and accidents are liable to occur.
During the major game it is also important to prevent accidents or big injuries as the equipments protect each vital part of the body.
Answer:
The answer is True
Explanation:
Hope this helps you
what is the equivalent resistance of the circuit?
Answer:
80Ω
Explanation:
Resistance in a series circuit (when one resistor is after another in the same line) is calculated with the following equation
Total resistance = R1 + R2 + R3...Rn
Substitute in your values and solve for total resistance
Total resistance = 60 + 20 = 80Ω
Answer:
80
Explanation:
Which image illustrates the bending of a wave around the edge of an
obstacle?
Answer: C
Explanation:
ANSWER ASAP PLEASE
Which phenomenon occurs when a wave encounters a non–transmitting barrier?
A.
refraction of the wave with a different wave speed
B.
reflection of the wave with a different wavelength
C.
reflection of the wave with the same wave speed
D.
refraction of the wave with a different wavelength
Answer:
C. reflection of the wave with the same wave speed
Jennifer and Janna are trying to figure out how to control the mouse problem in their horse barn. They have tried several types of traps baited with peanut butter with no luck. The girls decide that the problem might not be the type of trap; it might be the type of food. What is the BEST question for the girls to use on their next experiment?
Answer:
It is option A because girl notices that it is matter of food which depends.
Explanation:
Answer: Your answer would be C
Explanation: None of the traps work with peanut butter, the next step is to test each type of trap individually with different foods. Hope this helps :)
Please I need help on this please
Answer: all except 3, 5, and 6
Explanation: these 3 options are all positive effects. fewer extinctions would mean fewer loss of animal life, and a decrease in mining and water pollution would be less harmful to the environment
it’s all of them but not 3,5, and 6.
Wood burning is a chemical reaction. However, wood does not just spontaneously catch on fire. It needs ____________ to begin the chemical reaction.
A) Chemical Energy
B) Physical Energy
C) Electron Energy
D) Activation Energy
Answer:
A chemical energy
Explanation:
This is the answer
Explain why sound energy is not a type of potential energy.
A. It does not depend on the position or configuration of the system.
B. It does not depend on the mass of the system.
C. It does not depend on the age of the system.
D. It does not depend on the temperature of the system.
Answer:
A
Explanation:
This was a project I had to do. What do you think of it?
Answer:
looks nice, it must of taken months of practice! Great job!
PLEASE SOMEONE ANSWER THIS
How are water turbines and windmills similar?
They both change the direction of motion.
They both use rotary motion.
o They both can be used to generate electricity.
All of the above.
Answer:
i want to say all of the above but not sure
Explanation:
Answer:
All of the above
Explanation:
Susan is making an electromagnet in her science class today. First, she takes a nail and winds coils of copper wire around it then, she
connects the ends of the wire to a battery. She uses the electromagnet to pick up paper clips, but the paper clips drop when she
disconnects the wires from the battery, Which kind of energy does Susan change into magnetic energy in this project
chemical
electrical
heat
light
Answer:
Electrical
Explanation:
She uses a battery, which is electrical.
It doesn't operate using chemicals, heat, or light
Answer:
it's chemical and electrical because she uses her circuit in which the both forms take place...........so according to me the most probably the answer is electrical.....
Explanation:
because she uses her circuit in which the both forms take place...........so according to me the most probably the answer is electrical.....
___________is the rate at which electric charges move through a conductor. *
voltage
current
resistance
amps
Answer:
VoltageExplanation:
A conductor's voltage determines how fast electric charges pass through it. In a circuit, electrons move around due to voltage. If there is no voltage, electrons can move in any direction.
Voltage is the correct answer.
I hope this helps you! Please let me know if my answer is wrong.
What must a magnet always have?
O A. Two like charges
OB. Two opposite poles
O c. Two opposite charges
OD. Two like poles
Answer:
two opposite poles
Explanation:
A point charge Q = -400 nC and two unknown point charges, q1 and q2, are placed as shown. Point charge q1 is located 1.3 meters along the +x-axis, point charge q2 is located 0.7 meters down the -y-axis, and point charge Q is located 2.0 meters from the origin at an angle of 30° above the x-axis. At the origin, the three charges together create an electric field that has magnitude zero. What is the charge q1?
150 nC
120 nC
–120 nC
–150 nC
250 nC
To find the charge q1, set up equations for the electric fields created by each charge and solve them simultaneously. The value of q1 is -150 nC.
Explanation:To find the charge q1, we need to consider the electric field created by each of the three charges separately. Since the total electric field at the origin is zero, the electric fields from charges Q, q1, and q2 must sum up to zero.
We can use the formula for the electric field due to a point charge, which is given by E = k * Q / r^2, where k is the electrostatic constant, Q is the charge, and r is the distance from the charge to the point of interest. By setting up equations for the electric fields from each charge and solving them simultaneously, we can find the value of q1.
After solving the equations, we find that the charge q1 is equal to -150 nC.
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When describing image formation in lenses, what is the angle of incidence?
A. The angle the light ray makes in the medium with a lower index of
refraction.
O
B. The angle the light ray makes as it strikes the surface.
) C. The angle the light ray makes in the medium with a higher index of
refraction
D. The angle the light ray makes as it leaves the surface.
Answer:
The angle the light ray makes as it strikes the surface.
Explanation:
When describing image formation in lenses, the angle of incidence is the angle the light ray makes as it leaves the surface.
What is angle of incidence?The angle with which the light ray is falling on the surface, measured from the horizontal s called the angle of incidence.
Thus, when describing image formation in lenses, the angle of incidence is the angle the light ray makes as it leaves the surface.
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What is a mixture of sugar and water? a solution molecule a compound a precipitate
Answer:
A solution
Explanation:
Sugar (solute) is soluble in water and would dissolve into the water (the solvent) to form a solution.
Which wheel and axle would allow a load of rocks to be dragged with less force?
Two wheel and axles
A. Wheel and axle A.
B. Wheel and axle B.
C. Both devices would require the same amount of force.
D. Not enough information
Both devices would require the same amount of force. Therefore, the correct option is option C among all the given options.
What is force?A force in physics is an effect that changes the velocity of a mass-moving object, causing it to accelerate from rest, for example. It is a vector quantity since it can be a push or perhaps a pull and always has magnitude and direction. It is denoted by the letter F and is measured in newtons (N), the SI unit of force (formerly P).
The net force exerted on an object approximately equal to the rate where its momentum varies over time, according to Newton's second law in its original formulation. Both devices would require the same amount of force.
Therefore, the correct option is option C among all the given options.
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Final answer:
Without specific sizes of the wheel and axle radii, it's not possible to determine which wheel and axle would require less force to drag a load; hence, the answer is 'Not enough information'.(Option D)
Explanation:
The student asked which wheel and axle would allow a load of rocks to be dragged with less force. To answer this question, it's important to understand that a wheel and axle is a form of lever that can rotate around the center of the axle. The mechanical advantage of such a device is calculated by dividing the radius of the wheel by the radius of the axle.
Without specific measurements of the wheel and axle radii provided for Option A and B, it is not possible to determine which wheel and axle configuration would require less force to drag a load of rocks. Thus, the correct answer to the question would be D. Not enough information.
What would be a clean energy replacement for the dam’s hydroelectric power?
Answer:
solar panels
Explanation:
Two boats are anchored in the harbor, separated by a horizontal distance of 18 m. The boats bob up and down as waves enter the harbor. When one boat is at its highest point, the other is at its lowest point and there is one wave crests between them. Each boat makes exactly 2 complete up-and-down cycles every 16.0 s. The vertical distance between a boat's highest and lowest position is 3.6 m.
Final answer:
The amplitude of a wave is half the height from peak to trough, so a 2 m crest above still water has an amplitude of 1 m. A seagull bobbing every 2 seconds between 3 m apart crests experiences a wave velocity of 1.5 m/s. A boat hit by a 2 m high wave peak will change elevation by 2 m.
Explanation:
The question provided is related to the physics of waves, specifically their propagation, amplitude, frequency, and wavelength. When discussing a wave crest measuring 2 m above the still water mark, the amplitude of the wave is actually 1 m, as the amplitude corresponds to the maximum displacement from the equilibrium (still water level) to the peak of the wave, which would be half of the peak-to-trough height.
Therefore, if a wave's crest is 2 m above the still water mark, and assuming the trough is the same distance below, the amplitude is 1 m.
Similarly, for a seagull bobbing up and down on the water's surface, if it does so once every two seconds and the distance between two crests of the water wave is 3 m, the velocity of the wave would be 1.5 m/s (wavelength divided by the period: 3 m / 2 s = 1.5 m/s).
Regarding a boat that bobs up and down due to wave action, if the height of the wave is 2 m, the boat's height will change by 2 m when hit by the peak of the wave, considering the change from the equilibrium position to the peak.
What type of energy is used by your body when you eat food?
Answer:
Chemical energy
Explanation:
Answer:
Chemical Energy
Explanation:
A 70.0-kilogram man is walking at a speed of 2.0 m/s. What is his kinetic energy?
KE : 1/2mv^2
KE: 1/2 x 70(2^2)
KE: 1/2 x 70 x 4
= 1/2 x 280
280 x 1/2 = 140
Therefore, the man's kinetic energy is 140J.
What is the resistance force when you walk up an inclined plane?
Answer:
the resistance force is mg cos(-)
Explanation:
The resistance force on an inclined plane is generated by a portion of the object's weight acting downward along the plane and the counteracting frictional force. It opposes your upward movement. The total force exerted walking up an incline is less than lifting the same weight vertically, which explains why it's easier to walk uphill than climb a ladder of the same height.
Explanation:When you walk up an inclined plane, you encounter two forces due to gravity: a force acting perpendicular to the plane and a force acting parallel to the plane. The perpendicular force is typically equal in magnitude and opposite in direction to the normal force. The force acting parallel to the plane leads the object to accelerate down the incline. This is the resistance force you experience when moving up. It's composed of a part of the weight (W) inclined downward along the plane and the opposing frictional force (f). Specifically, if the incline is at an angle Θ, the resistance force, W_parallel, can be expressed as W_parallel = mg sin(Θ), where m is mass and g is the force of gravity, and the kinetic friction, f_k, can be expressed as: f_k = μ_k mg cos(Θ).
However, when walking, you work against the resistance to move forward, and hence, the net force is not zero. As a result, climbing an inclined plane is less strenuous than climbing directly upwards, though it demands work over a greater distance.
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The density for potassium is 0.856 g/cm3. What would be the mass of a 40 cm3 piece of potassium?
A. 68.48g
B. 46.73g
C. 34.24g
D. 34g
Answer:
38.52g
Explanation:
Answer:
34.24g
Explanation:
for study island said I got it correct.