Angular and Linear Quantities: A wheel of diameter 0.70 m rolls on the floor without slipping. A point at the top of the wheel moves with a speed 2.0 m/s relative to the floor.(a) At what speed is the central axis of the wheel moving relative to the floor?(b) What is the angular speed of the wheel?
What will be an ideal response?
(a) 1.0 m/s (b) 2.9 rad/s
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At the equilibrium melting temperature of a solid, if an atom of solid changes to liquid, the change in the Gibbs free energy is equal to:
(a) The heat of fusion. (b) Zero. (c) A negative value. (d) A positive value.
A transverse periodic wave is represented by the equation z(y, t) = 1.50 cm sin(1,250 rad/s t + 10.0
What is the direction of the velocity of the wave?
A. the x direction B. the y direction C. the z direction D. the t direction
Two charges, Q1 and Q2, are separated by a certain distance R. If the magnitudes of the charges are doubled and their separation is also doubled, then what happens to the electrical force between these two charges?
A) It is doubled. B) It changes by a factor of 3. C) reduced by a factor of . D) It is quadrupled. E) It remains the same.
If you hold one end of a metal bar against a piece of ice, the end in your hand will soon become cold. Does cold flow from the ice to your hand?
A. yes B. in some cases, yes C. no D. in some cases, no