A skydiver of 75 kg mass has a terminal velocity of 60 m/s. At what speed is the resistive force on the skydiver half that when at terminal speed?
a. 15 m/s
b. 49 m/s
c. 30 m/s
d. 42 m/s
e. 36 m/s
d
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As the speed of a particle approaches the speed of light, the mass of the particle
A) increases. B) decreases. C) remains the same. D) approaches zero. E) approaches infinity.
A metallic object has a net charge on it. For steady state conditions, the excess charge is
A. only on the surface. B. on the bottom of the object. C. on the north side of the object. D. spread evenly throughout the object. E. in the center of the object.
Why does silica content differ in each volcano?
What will be an ideal response?
An ideal gas in a balloon is kept in thermal equilibrium with its constant-temperature surroundings
How much work is done by the gas if the outside pressure is slowly reduced, allowing the balloon to expand to 6.0 times its original size? The balloon initially has a pressure of and a volume of The ideal gas constant is R = 8.314 J/mol ? K. A) 120 J B) 390 J C) -330 J D) 6.0 J