Uranium-238 ultimately decays to ________-206.
A. carbon
B. potassium
C. argon
D. uranium
E. lead
Answer: E
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A heavy stone is launched straight upward at 100 m/s. If air resistance can be neglected, the time to reach its maximum height is
A. more than 20 s. B. 10 s. C. 20 s. D. none of the above
Radar gathers information about precipitation in clouds by measuring the ____
A) energy emitted by the precipitation particles B) absorption characteristics of falling precipitation C) amount of energy reflected back to a transmitter D) amount of sunlight scattered off the precipitation
Waves that travel through each other tend to cancel each other out and cease to exist on the far side of the passing zone.
Answer the following statement true (T) or false (F)
When a dropped apple hits the ground, the momentum transferred to the ground is
A. greater than the apple's whether or not bouncing occurs. B. a bit greater if the apple bounces. C. negligible compared to the momentum of the apple. D. none of the above