Physics, 06.03.2020 22:34, jngonzo1226
A CD spins at a constant angular velocity of 5.0 revolutions per second counterclockwise. Which
of the following statements about the CD is true?
O
A net torque acts on it counterclockwise to keep it moving.
O No net torque acts on it at all.
O
A net torque acts on it clockwise to keep it moving.
Answers: 2
Physics, 21.06.2019 17:20, ednalovegod
The specific heat of silver is 0.057 calories/gram°c. if 10.0 grams of silver were heated and the temperature of the sample changed by 20.0°c, how many calories of heat energy were absorbed by the sample?
Answers: 1
Physics, 22.06.2019 05:10, zionnahl
Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.
Answers: 3
Physics, 22.06.2019 16:30, JJlover1892
What is the kinetic energy of a baseball moving at a speed of 40 m/s if the baseball has mass of 0.15 kg?
Answers: 2
A CD spins at a constant angular velocity of 5.0 revolutions per second counterclockwise. Which
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