Physics: Semester 2 Review, Retake

This electromagnetic device converts electrical energy into rotary kinetic motion:

• Step-up Transformer

• Step-down Transformer

• Motor

• Generator

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NGSS.HS-PS2-5

NGSS.HS-PS3-3

A non-metal, ceramic plate is placed in series with a battery and light bulb. Which would best describe what will happen after the switch is closed?

• The light bulb will brighten up quickly.

• The light bulb will remain off.

• The light bulb will be short circuited.

• The light bulb will increase in brightness steadily over time.

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NGSS.HS-PS2-5

Assuming there is an ideal battery and that each light bulb is 20 ohms, what is the total resistance of the circuit shown?

Based on slow motion camera footage, a 0.06 kg tennis ball hits a tennis racket with an initial velocity of 16.1 m/s [right]. After it is whacked, it moves 17.25 m/s [left]. What is the impulse applied by the racket on the tennis ball? (Positive direction is rightward)

• -2.00 Ns

• -0.07 Ns

• 0.07 Ns

• 2.00 Ns

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NGSS.HS-PS2-1

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On a frictionless surface: a 5 kg object moving 10 m/s rightward is having a head on collision with a 15 kg object moving 4 m/s leftward. They get stuck to each other. What is their combined speed?

• 0.50 m/s

• 1.33 m/s

• 5.50 m/s

• 6.00 m/s

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NGSS.HS-PS2-2

As the sun causes the water in the ocean to evaporate, what can be said about the sun-ocean system in terms of the Laws of Thermodynamics?

• The Entropy of the Sun-Ocean system increases.

• The Entropy of the Sun-Ocean system is conserved.

• The Entropy of the Sun-Ocean system decreases.

• The Entropy of the Sun-Ocean system becomes zero.

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NGSS.HS-PS3-4

A long pendulum takes about 0.4 seconds to swing from point A to point B. What is the frequency of the pendulum swing?

• 0.4 Hz

• 0.63 Hz

• 0.80 Hz

• 1.6 Hz

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NGSS.HS-PS4-1

The length of a string is 0.75 meters. If it is plucked and the third harmonic vibrates at a frequency 880 Hz (Note A), what is the speed of sound in this string?

• 343 m/s

• 440 m/s

• 587 m/s

• 660 m/s

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NGSS.HS-PS4-1

Which of the following statements is true?

• All electromagnetic waves are transverse waves.

• All transverse waves are electromagnetic waves.

• All longitudinal waves are sound waves.

• All mechanical waves are longitudinal waves.

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The sound wave going through the doorway spreads out, allowing Jack to hear Jill in the other room clearly. This wave behavior is known as:

• Rarefaction

• Refraction

• Diffraction

• Reflection

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NGSS.MS-PS4-1