You are at a red light in your car. The red light turns green, and you take your foot off the brake and step on the gas pedal, without turning the steering wheel. The speedometer changes from 0 to 20 mph in 3 seconds. In those 3 seconds, did the car change velocity? Is that an acceleration? a. The car did change velocity; that is an acceleration b. The car did change velocity; that is not an acceleration. c. The car did not change velocity; that is not an acceleration. d. The car did not change velocity, that is an acceleration
You are at a red light in your car. The red light turns green, and you take your foot off the brake and step on the gas pedal, without turning the steering wheel. The speedometer changes from 0 to 20 mph in 3 seconds. In those 3 seconds, did the car change velocity? Is that an acceleration? a. The car did change velocity; that is an acceleration b. The car did change velocity; that is not an acceleration. c. The car did not change velocity; that is not an acceleration. d. The car did not change velocity, that is an acceleration
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Oc. It is a representation of curved space-time, existing around any rotating mass primarily in the plane perpendicular to its rotation axis. Any other mass would experience a gravitational attraction.
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a. It is a representation of undetectable particles that travel everywhere in the Universe and were born in the Big Bang. These particles interact with masses so that the masses attract each other.
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Chapter 5: Review Questions
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How does the concept of a field explain action at a distance? Use the gravitational field as an example.
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Oc. It is a representation of curved space-time, existing around any rotating mass primarily in the plane perpendicular to its rotation axis. Any other mass would experience a gravitational attraction.
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a. It is a representation of undetectable particles that travel everywhere in the Universe and were born in the Big Bang. These particles interact with masses so that the masses attract each other.
Ob. It is a representation of an object influencing another one. The mass affects the field which spreads out in all directions causing gravitational attraction of any other mass.
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3 seconds, did the car change velocity? Is that an acceleration?
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You are at a red light in your car. The red light turns green, and you take your foot off the brake and step on the gas pedal, without turning the steering wheel. The speedometer changes from
0 to
20 mph in
3 seconds. In those
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a. The car did change velocity; that is an acceleration.
b. The car did change velocity; that is not an acceleration.
c. The car did not change velocity, that is not an acceleration.
d. The car did not change velocity, that is an acceleration.
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