High-speed stroboscopic photographs show that the head of a golf club of mass 200 grams is traveling at 55.0 m/s just before it strikes a 46.0-gram golf ball at rest on a tee. After the collision, the clubhead travels (in the same direction) at 40.0 m/s. Find the speed of the golf ball just after impact
65.2 m/s
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The masses of Neptune and Uranus were first determined by:
A) observations of their motions around the Sun. B) observations of their magnetic fields. C) their densities divided by their volumes. D) observations of the motions of their satellites. E) their compositions.
A sunken steel ship has a mass of 500,000 kg. It is filled with water. In order to lift the ship, air bags are to be inflated inside the hull. What volume of air is needed if 7.8 is the specific gravity of steel?
A) 1266 m3 B) 436 m3 C) 872 m3 D) 225 m3 E) 2778 m3
The ozone layer absorbs ______________ radiation
Fill in the blank(s) with correct word
The four fundamental forces in nature are the __________, __________, __________, and __________
Fill in the blank(s) with correct word