Two children ride on a merry-go-round, George is at a greater distance from the axis of rotation than Jacques. It is a true statement that
A) Jacques has a greater angular velocity than George.
B) Jacques and George have the same angular velocity.
C) Jacques has a smaller angular velocity than George.
D) both have zero angular velocities.
E) Cannot tell which one has the greater angular velocity without knowing their masses.
B
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Uranus and Neptune do not contain liquid metallic hydrogen because they
a. are not massive enough. b. do not contain enough hydrogen. c. rotate too slowly. d. are too far from the sun. e. have magnetic fields that are much too weak.
Which nuclear fusion processes occur in Sun-like stars?
a. triple alpha b. CNO and triple alpha c. proton-proton and triple alpha d. All of the other choices are correct.
Standing Waves on a String: A string of linear density 1.5 g/m is under a tension of 20 N. What should be its length if its fundamental resonance frequency is 220 Hz?
A. 0.26 m B. 0.96 m C. 1.1 m D. 1.2 m
Process of Science: Why is String Theory not really a theory?
What will be an ideal response?