Physics, 20.11.2020 20:50, ramireztony741
The total kinetic energy of two cars is measured before and after they crash into each other. The total kinetic energy of the two cars after the crash is
less than the total kinetic energy before the crash. Which of the following best explains the loss of kinetic energy?
Some of the cars' kinetic energy was converted to sound and heat energy
Both of the cars were being pulled downward by the force of gravity,
O The cars will eventually stop moving, which shows that energy is always lost.
The car with more mass gave up its kinetic energy to the car with less mass.
Answers: 3
Physics, 22.06.2019 14:10, nikki4367
Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:
Answers: 3
Physics, 22.06.2019 14:30, lizzie3545
Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd a) 30 joules b) 3000 joules c) 320 joules d) 3200 joules
Answers: 2
Physics, 22.06.2019 18:00, ggdvj9gggsc
Atank is filled with an ideal gas at 400 k and pressure of 1.00 atm . part a the tank is heated until the pressure of the gas in the tank doubles. what is the temperature of the gas?
Answers: 3
The total kinetic energy of two cars is measured before and after they crash into each other. The to...
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