A series of ocean waves, 7.0 m between crests, move past at 4.0 waves/s. Find their speed
a. 1.8 m/s
b. 7.0 m/s
c. 11.0 m/s
d. 28 m/s
e. 3.0 m/s
d
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A parallel plate capacitor is connected to a battery and charged to voltage V. Leah says that the charge on the plates will decrease if the distance between the plates is increased while they are still connected to the battery. Gertie says that the charge will remain the same. Which one, if either, is correct, and why? a. Gertie, because the maximum voltage is determined by the battery
b. Gertie, because the capacitance of the capacitor does not change. c. Leah, because the capacitance decreases when the plate separation is increased. d. Leah, because the capacitance increases when the plate separation is increased. e. Neither, because the charge increases when the plate separation is increased.
An amount of an ideal gas is taken around the process shown. Which of the following statements about the internal energy of the states is true?
A Carnot engine is
A. one that would violate the second law of thermodynamics. B. a theoretical engine having the highest possible efficiency for the temperatures involved. C. equivalent to the gasoline internal combustion engine. D. currently in production for the new generation of imported cars.
What is the accepted explanation for millisecond pulsars?
What will be an ideal response?