Created by Master Student

Physics Practice Test #5

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When a voltage source that is inducing voltage into a large number of coils is disconnected, and a switch that is in series with the coils of wire is also opened, a spark is observed to jump across the switch terminals as the switch begins to open up. What is the cause of this spark?

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The symbols used in writing nuclear equations. Atomic nuclei are typically written in the form . Which letter represents the atomic number?

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An astronaut lives on a spaceship that is moving at a speed of c away from the earth. As measured by a clock on the spaceship, the time interval between her maintenance checks on the ship's main computer is 15 months. In the reference frame of the team here on Earth that monitors the ship's progress, what is the time interval between maintenance checks on the ship's main computer?

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A white disk and a black disk are placed on top of a snow bank on a sunny day. The black disk sinks deeper into the snow because

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A 6 volt battery is connected across a resistor, and a current of 1.5 A flows in the resistor. What is the value of the resistor?

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In which type of decay is the identity of the nucleus unchanged?

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A force is applied to an object that is free to move.Which of the following statements is correct?

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A thrown baseball hits and breaks a glass window and ends up inside the house. Which of the following is correct about the ball?

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If a container contains a mixture of two ideal gases (of different molecular masses) at thermal equilibrium, which of the following is true?

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Compare a bucket of boiling water to a cup of boiling water. Which statement(s) can be made about the two containers? I. The heat content of the two is the same. II. The temperature of the two is the same. III. The bucket of water contains more heat and is therefore hotter

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A box with a mass of 2 kg accelerates in a straight line from 4 m/s to 8 m/s due to the application of a force whose duration is 0.5 s. Find the average strength of this force.

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A pendulum swings at a rate of .75 vibrations/second. The frequency of the vibrations would decrease because ¦

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An electric circuit is composed of a pair of parallel 30 ohm resistors in series with a 9 ohm resistor. The current through the 9 ohm resistor is .25 A.What is the voltage applied to the circuit?

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The engineer of a train blows the train whistle as he approaches a crossing. A few moments later he hears an echo from the whistle. The engineer hears the echo of the whistle because of

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Scientists identify the elements that are burning in the stars by using which of the following devices?

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A flat plane is raised until a block resting on its surface just slides down the plane at a constant rate. Which statement(s) is/are true? I. The parallel force equals the frictional force. II. The weight of the object equals the frictional force. III. The perpendicular force equals the normal force.

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What is the de Broglie wavelength of a proton whose linear momentum has a magnitude of 3.3e-23 kg * m/s ?

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During practice, an athlete runs in a straight line from point X to point Y, and then back along the same path from Y to X. If she runs at a constant speed of 3 m/s from X to Y, and then at a constant speed of 6 m/s from Y to X, what is her average speed for the entire run?

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When Johannes Kepler developed his laws for the movement of planetary bodies, one of the laws stated that the orbits of the planets about the sun are

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Which type of decay would cause the atomic number of the nucleus to increase?

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A traveling wave has a frequency of 6.0 Hz, an amplitude of 0.2 m, and a wavelength of 0.5 m. What is its wave speed?

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An Imperial battle cruiser, sitting in a hanger deck, is measured to have a length of 200 m by a worker on the deck. If the cruiser travels at a speed of c past a planet, what will be the length of the cruiser, as measured by the inhabitants of the planet?

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A paperboy rides his bicycle down the street and throws the papers to houses as he rides by them. When a thrown paper leaves his hand, which of the following statements is NOT true about the paper?

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A spring accelerates a 2 kg cart from rest in a time of .8 seconds, giving it a momentum of 4 kg·m/s. With what force did the spring accelerate the cart?

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The binding energy of a nucleus is equal to

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When a net force acts upon an object, the object is

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Which of the following is true concerning a bi-concave lens?

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The mean distance from Saturn to the sun is 9 times greater than the mean distance from Earth to the sun. How long is a Saturn year?

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The most notable difference between a radio wave and a light wave is

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An astronaut visits the planet Mars, which has less of a gravitational acceleration than the earth. While on Mars, the astronaut will notice that his

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Which of the following best describes the condition of an enclosed gas during an isothermal expansion?

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If the pressure acting on an ideal gas that is kept at constant temperature is multiplied by four, its volume

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A rescue plane flying at 162 km/hr drops a survival package to a group of stranded skiers from a height of 70 m. After dropping the package the pilot of the plane continues to fly in a straight line. When the package strikes the ground it is

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Due to the magnetic force, a positively charged particle undergoes uniform circular motion in a uniform magnetic field. Which of the following changes could cause the radius of the circular path to decrease?

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A hanging weight stretches a spring 8 cm. If the weight is doubled and the spring constant is not exceeded, how much will the spring stretch?

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Which one of the following statements is true concerning the motion of an ideal projectile launched at an angle of 45 degrees to the horizontal?

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An object is moving in a circular path with a constant velocity (v). If the radius of the circle in which the object is moving is decreased by one half and the velocity remains the same, what will happen to the centripetal force?

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For an ohmic conductor, doubling the voltage without changing the resistance will cause the current to

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New thermos bottles have the ability to keep hot substances hot for several days. The thermos bottles have a highly polished interior made of stainless steel, which makes them almost unbreakable. These thermos bottles keep substances hot by reducing heat loss due to

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A person who weighs 800 N steps onto a scale that is on the floor of an elevator car. If the elevator accelerates upward at a rate of 5 m/s2, what will the scale read?

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