In an elastic collision between two bodies of equal mass, with body 2 initially at rest, body 1 moves off at angle ? relative to the direction of its initial velocity and body 2 at angle ?. The sine of the sum of ? and ?, sin(? + ?), is equal to
a. 0.
b. 0.500.
c. 0.707.
d. 0.866.
e. 1.00.
e
Physics & Space Science
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The average star spends ________ of its lifetime on the main sequence
a. 1% b. 2% c. 10% d. 20% e. 90%
Physics & Space Science
Which of the following resources are all considered nonrenewable?
-rivers and waves -coal, oil, and natural gas -natural fibers and forest products -plants and animals -wind energy, solar energy, and natural gas
Physics & Space Science
What kind of energy does gasoline possess?
A) mechanical B) kinetic C) potential D) radiative
Physics & Space Science
When a damping force is applied to a simple harmonic oscillator which has period T0 in the absence of damping, the new period T is such that
a. T < T0. b. T = T0. c. T > T0. d. wT < w0T0. e. wT > w0T0.
Physics & Space Science