A swan is landing on an icy lake, sliding across the ice and gradually coming to a stop. As the swan slides, the direction of the acceleration is
A. to the left
B. to the right
C. upward
D. downward
Answer: B. to the right
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The EM wave that has the smallest wavelength in this list is
a. ultraviolet. b. infrared. c. x-rays. d. microwave. e. gamma rays.
A 9.0-V battery costs $1.49 and will run a portable CD player for 6.0 hours before running down and needing to be replaced
If this battery supplies a current of 25 mA to the player, what is the cost of the energy provided by the battery in dollars per kWh? A) $11/kWh B) $11,000/kWh C) $1100/kWh D) $110/kWh
When an elevator is accelerating upward, the frequency of a pendulum inside
A) increases. B) decreases. C) doesn't change.
Ideal Gas Law: Two containers of equal volume each hold samples of the same ideal gas. Container A has twice as many molecules as container B. If the gas pressure is the same in the two containers, the correct statement regarding the absolute temperatures TA and TB in containers A and B, respectively, is
A. TA = TB.
B. TA = 2TB.
C. TA = 
TB.
D. TA = 
TB.
E. TA = 
TB.