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Created by Master Student

Physics Practice Test #1

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A ball of mass m traveling horizontally with velocity v strikes a massive vertical wall and rebounds back along its original direction with no change in speed. What is the magnitude of the impulse delivered by the wall to the ball?

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What's the missing particle in the following nuclear reaction?

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Electromagnetic induction occurs in a wire when a change occurs in the

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A ball of mass 0.5 kg, initially at rest, acquires a speed of 4 m/s immediately after being kicked by a force of strength 20 N. For how long did this force act on the ball?

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In the theory of relativity it is stated that all laws of nature are the same in reference frames that

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Einstein's theory of relativity is based on which of the following statements?

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A spaceship is moving directly toward a planet at a speed of . When the spaceship is 4.5e8 m from the planet (as measured by someone on the spaceship), a pulse of light is emitted by someone on the planet. As measured by someone on the spaceship, how long does it take the light pulse to travel from the planet to the ship?

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An object of mass 2 kg increases in speed from 2 m/s to 4 m/s in 3 s. What was the total work performed on the object during this time interval?

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When U-235 is fissioned in a nuclear reactor, the nuclear reaction is maintained by

10 / 40

When a projectile moving in a parabolic path reaches its highest point above the ground,

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Two different light bulbs are in a DC circuit powered by an 18 V battery as its power source. The two bulbs are rated at 4.5 watts (B1) and 6.75 watts (B2) each. What are the resistances of the two light bulbs (B1) and (B2)?

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While a child flies a kite on a breezy day, a burst of wind causes the kite to fly in 1.6 m diameter circles in the sky every second. If the circular motion were converted to a straight down speed, how fast would the kite dive toward the ground?

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A 20 N block is being pushed across a horizontal table by an 18 N force. If the coefficient of kinetic friction between the block and the table is 0.4, find the acceleration of the block.

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Electrical energy is changed into mechanical energy in a device called a/an

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The time it takes a satellite to make one orbit around the earth depends on the satellite's

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When a photon strikes an electron and energizes it, the electron will receive the most energy from the photon if

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Which of the following statements is true?

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An object falls with constant acceleration near the earth. Which statement best describes the velocity of the object?

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What is the wavelength of an X-ray whose frequency is 1.0e18 Hz?

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If a 60-watt lightbulb operates at a voltage of 120 V, what is the resistance of the bulb?

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Which wave characteristic describes the number of wave crests passing a given point per unit time?

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Ice, which has a temperature of 0 degrees celsius, is added to 500 g of water that has a temperature of 100 degrees celsius. Ice is continually added to the system until it has all melted and no more ice will melt. What is the temperature of the water in the system?

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An Olympic weight lifter lifts a weight bar weighing 2000N straight up to a height of 2.25 m in a time of .65 seconds. The weight lifter stands holding the weight at that height for the next 4 seconds before dropping the weights to the floor. How much work did the weight lifter do while holding the weights overhead?

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A goldfish swims through an aquarium by moving its fins and tail. What causes the fish to move forward? I. The force the water exerts on the goldfish II. The force the tail of the goldfish exerts on the water III. The force the fins of the goldfish exert on the water.

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A dog walks 120 m due east, then turns and runs 60 m west. An interesting smell attracts the dog, and it trots 40 m due north. At this point the dog is 85 m northeast of his home. The dog hears his master call him and he runs directly home. Which part of the trip is the largest vector?

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A heat engine receives 150 Joules of heat energy and performs 70 Joules of work. If heat cannot be removed from the heat engine in any other way, by what value does the internal energy of the system change?

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A light ray passes from a material of low refractive index to one of high refractive index. Which of the pairs of quantities listed below describes the light ray as it strikes and passes through the interface between the two materials? Match the descriptions below with the statement that best describes the situation. A part of the light ray remains inside the low refractive index material.

28 / 40

Einstein based his theory of relativity on the postulate that

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Which of the following is NOT a correct pairing of physicist and field in which he made significant contributions?

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A 24 V battery is connected to a 4 ohm resistor, causing a current of 5 amperes. What is the internal resistance of the battery?

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Two satellites orbit the earth in circular orbits, each traveling at a constant speed. The radius of satellite A's orbit is R, and the radius of satellite B's orbit is 3R. Both satellites have the same mass. How does FA, the centripetal force on satellite A, compare with FB, the centripetal force on satellite B ?

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A driver in an automobile hears a siren behind her and pulls over to let a fire engine pass. The sound of the siren changes as the fire truck approaches, is beside her, and passes her. Which of the following is/are true under these conditions? I. The pitch of the sound increases as the fire truck approaches. II. The wavelength of the sound increases as the fire truck approaches. III. The wavelength of the sound increases after the fire truck passes.

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While a person lifts a book of mass 2 kg from the floor to a tabletop, 1.5 m above the floor, how much work does the gravitational force do on the book?

34 / 40

The density of any substance from the most dense phase to the least dense phase is

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The critical angle for a beam of light passing from a diamond into the air is 24.4 degrees. This means that any light rays that strike the surface interface between the diamond and the air with an angle less than 24.4 degrees are

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An Olympic weight lifter lifts a weight bar weighing 2000N straight up to a height of 2.25 m in a time of .65 seconds. The weight lifter stands holding the weight at that height for the next 4 seconds before dropping the weights to the floor. How much power did the weight lifter use to lift the weights overhead?

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Which one is NOT a vector?

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A radioactive isotope of iodine has a halflife of 8 hours and causes a counter to register 180 counts/min. Find the count rate for this sample of iodine two days later.

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2 satellites orbit the earth. Their orbits are circular, and each satellite travels at a constant speed. If the mass of Satellite #2 is twice the mass of Satellite #1, which satellite's speed is greater?

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The catcher prepares to receive a pitch from the pitcher. As the ball reaches and makes contact with his glove, the catcher pulls his hand backward. This action reduces the impact of the ball on the catcher's hand because