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A 1.36 103-kg car traveling initially with a speed of 20.0 m/s in an easterly direction crashes into the rear end of a 9.00 103-kg truck moving in the same direction at 15.0 m/s. The velocity of the car right after the collision is 13.0 m/s to the east. What is the velocity of the truck right after the collision? (Assume east is the positive direction. Indicate the direction with the sign of your answer.)
m/s
How much mechanical energy is lost in the collision? (Use the exact value you entered the first part to make this calculation.)
J
The equation of a transverse wave on a string is y = (6.1 mm) sin[(30 m-1)x + (300 s-1)t] The tension in the string is 42 N. Find the linear density of this string
Light of wavelength 572 nm illuminates a single 0.72 mm wide slit. What is the width of the central maximum
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Explain how much work does the spring do on the block if the spring is stretched from relaxed length by 15.1 mm as the block is moved?
A softball of mass 0.200kg that is moving with a speed of 7.0m/s collides head-on and elastically with another ball initially at rest, Calculate the mass of the target ball
An ideal gas in a piston is placed in a refrigerator, which removes 686 J of energy from the gas via cooling. find the net change in the internal energy of the gas in the piston
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