Physics Final Review

According to Newton’s Universal Law of Gravitation, ________.

• A. The greater the masses, the greater the gravitational force between them.

• B. The greater the distance between the masses, the greater the gravitational force between them.

• C. The greater the masses, the weaker the gravitational force between them.

• . D. The force of gravity is the strongest of the four presently known fundamental forces.

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If a wave has a wavelength of 2 m and a frequency of 20 Hz, what is the speed of the wave?

• 20 m/s

• 40 m/s

• 30 m/s

• 10 m/s

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The vibration of an object about an equilibrium point is referred to as simple harmonic motion when the restoring force is proportional to which of the following?

• Time

• Spring Constant

• Dusplacement

• Mass

Look at the image below.

As depicted in the image, a person mowing a lawn exerts a force of 120 N at an angle of 30.0° above the horizontal. How much work does the person do when he or she moves 20.0 meters, at a constant velocity?

• 1500 joules

• 2080 Joules

• 1220 Joules

• 2040 Joules

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A 20.0 newton force is used to push a 2.00 kilogram cart a distance of 5.00 meters. How much work is done on the cart? is

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While the ball is in the air after it leaves the table, what happens to the relationship between its kinetic and potential energies?

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Use the diagram below to answer any questions that follow. In the diagram, a ball of mass 0.200 kg rolls off of a tabletop at a speed of 2.00 m/s. The table is 1.25 m high. (Assume that the potential energy at the floor is zero. Disregard rotational kinetic energy.)

• 2.45 J

• 0.00 J

• 2.85 J

• 0.85 J

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Momentum is considered a vector quantity because it has

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When can total internal reflection occur?

• when the angle of incidence is equal to the critical angle

• when the angle of incidence is less than the critical angle

• from a material with a higher index of refraction to one with a lower index of refraction

• from a material with a lower index of refraction to one with a higher index of refraction

What is the position and type of image produced by the lens shown above?

• between F and 2F; virtual

• to the right of 2F; virtual

• between F and 2F; real

• to the right of 2F; real