Which of a planet's fundamental properties has the greatest effect on its level of volcanic and tectonic activity?
a. size
b. distance from the Sun
c. rotation rate
Answer : a. size
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A heavy stone of mass m is hung from the ceiling by a thin 8.25-g wire that is 65.0 cm long. When you gently pluck the upper end of the wire, a pulse travels down the wire and returns 7.84 ms later, having reflected off the lower end
The speed of sound in the room is 344 m/s, and the stone is heavy enough to prevent the lower end of the wire from moving. If the wire is vibrating in its second overtone, what is the frequency of the sound it will produce? A) 383 Hz B) 128 Hz C) 191 Hz D) 255 Hz E) 765 Hz
A large cylindrical water tank is mounted on a platform with its central axis vertical. The water level is 3.75 m above the base of the tank, and base is 6.50 m above the ground. A small hole 2.22 mm in diameter has formed in the base of the tank
Both the hole and the top of the tank are open to the air. We can ignore air resistance and treat water as an ideal fluid with a density of 1000 kg/m3. (a) How many cubic meters of water per second is this tank losing? (b) How fast is the water from the hole moving just as it reaches the ground?
Belts and zones are clouds that wrap around the entire planet
a. True b. False Indicate whether the statement is true or false
Elastic Collisions: In the figure, determine the character of the collision. The masses of the blocks, and the velocities before and after, are shown. The collision is
A. perfectly elastic. B. partially inelastic. C. completely inelastic. D. characterized by an increase in kinetic energy. E. not possible because momentum is not conserved.