Two children are riding on a merry-go-round. Child A is at a greater distance from the axis of rotation than child B. Which child has the larger angular displacement?

A) Child A
B) Child B
C) They have the same zero angular displacement.
D) They have the same non-zero angular displacement.
E) There is not enough information given to answer the question.


D

Physics & Space Science

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The ____ of a star is a measure of the total energy radiated by the star in one second

a. color b. apparent visual magnitude c. luminosity class d. spectral type e. luminosity

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Which of the following statements is not true about the Standard Model?

a. The Standard Model is too complex to be fully discussed in a textbook of this level. b.Most physicists think the Standard Model is the ultimate theory of particle physics.

c. The Standard Model explains hundreds of particles and the existence of quarks. d. The Standard Model is a combination of the electroweak theory and quantum chromodynamics, but does not include gravity.

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The period before the separation of the gravitational force is the Planck Epoch

Indicate whether the statement is true or false

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Proportional Reasoning: Assuming equal rates of acceleration in both cases, how much longer would it take a car to stop if braking from 56 mi/h than from 28 mi/h?

A. 8 times as long B. 4 times as long C. 2 times as long D. 1.4 times as long E. the same in both cases

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