Consider a point on a bicycle wheel as the wheel turns about a fixed axis, neither speeding up nor slowing down. Compare the linear and angular accelerations of the point
a. Both are zero.
c. Only the linear acceleration is zero.
b. Only the angular acceleration is zero.
d. Neither is zero.
B
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You leave a black, spherical bowling ball out in the hot sun and it warms to a scalding hot temperature of 80ºC. The ball has a radius of 0.25 m (25 cm). What is the total power being radiated outward from this hot ball at this temperature?
Fill in the blank in the following chemical reaction that occurs in theSun: Deuterium+proton = ?? + energy:
a) hydrogen-1 b) helium-3 c) deuterium-2 d) carbon-12 e) helium-4
When did oxygen begin to accumulate in the atmosphere?
A) as soon as Earth was formed B) about 2 billion years ago C) about 200 million years ago D) as soon as the early bombardment ended E) as soon as life appeared
Moderators absorb neutrons
What will be an ideal response?