An astronaut on a strange new planet having no atmosphere finds that she can jump up to a maximum height of 27 m when her initial upward speed is 6.0 m/s. What is the magnitude of the acceleration due to gravity on the planet?
What will be an ideal response?
0.67 m/s2
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As the frequency of the ac voltage across a capacitor approaches zero, the capacitive reactance of that capacitor
A) approaches zero. B) approaches infinity. C) approaches unity. D) none of the given answers
Momentum: A 0.10-kg ball, traveling horizontally at 25 m/s, strikes a wall and rebounds at 19 m/s. What is the magnitude of the change in the momentum of the ball during the rebound?
A. 1.2 kg ? m/s B. 1.8 kg ? m/s C. 4.4 kg ? m/s D. 5.4 kg ? m/s E. 72 kg ? m/s
In order for an object to be in static equilibrium
A. The net force equals zero B. Both the net force and the net torque equal zero C. Either the net force or the net torque equal zero D. The net torque equals zero
What basic type of reaction is illustrated by the general equation A + B ? AB?
a. Combination b. Decomposition c. Double-replacement d. Single-replacement