Physics Questions

a stone falls from a ledge and takes 8 seconds to hit the ground. The stone has an original velocity of 0 m/s. How tall is the ledge
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A window washer who does not want to change his position will want the forces acting on him to be ____________. a. balancedb. largec. smalld. unbalanced
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A disturbance that transfers energy from place to place is called aa. wave.b. medium.c. vibration.d. compression.
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The unit for measuring electric power is the A. volt.B. ampere.C. watt.D. ohm.
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A bowling ball has a mass of 7.2 kg and a weight of 70.6 N. It moves down the bowling alley at 1 m/s and strikes a pin with a force of 15.0 N. What is the force that the pin exerts on the bowling ball?
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As a person pushes a box across a floor, the energy from the person’s moving arm is transferred to the box, and the box and floor become warm. During this process, energy is
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Why are objects that fall near Earth’s surface rarely in free fall?
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Tunicates resemble a _____ on the sea floor. rod square sac hole
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When in orbit, a satellite such as the space shuttle isa. simply a projectile.b. in non-accelerated motion.c. free from Earth's gravity.
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The Pacific plate collides with and is subducted under four other crustal plates. The area where this happens has lots of volcanic activity. This area is called the _____.
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Match the physical properties on the left with their descriptions on the right. 1. luster ability to dissolve in another substance 2. freezing point the shininess of a material 3. viscosity temperature at which a liquid becomes a solid 4. solubility able to be pulled into a wire 5. ductility the measure of a substance's resistance to flow
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What type of energy is involved when a river moves sediment and erodes its banks?a. chemical energyb. gravitational energyc. potential energyd. kinetic energy What happens as gravity pulls water down a slope?a. Kinetic energy changes to potential energy.b. Both kinetic and potential energy vanish.c. Energy is stored for future use.d. Potential energy changes to kinetic energy.
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The _____ theory is the most accepted theory regarding the origin of the solar system. It suggests that our star, the Sun, was first created by a cloud of dust and gas. nebular condensation big bang steady state
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Our Sun is all of the following EXCEPT ____.a. part of a binary systemc. a yellow starb. a main sequence stard. of average absolute magnitude
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Suppose that you're facing a straight current-carrying conductor, and the current is flowing toward you.The lines of magnetic force at any point in the magnetic field will act inA. the same direction as the current.B. a clockwise direction.C. a counterclockwise direction.D. the direction opposite to the current.
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Three students are pushing on a box. Under what conditions will the motion of the box change?
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The energy of motion is calledA. kinetic energy. B. potential energy. C. thermal energy. D. work.
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An explosion that destroys a massive star is called a A. nebula. B. supernova. C. black hole. D. vacuum.
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