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A projectile with a mass of 9.10 g is traveling at a speed of 1.10 km/s, determine the following.
1. Kinetic energy of the projectile in kilojoules: ________ kJ
2. Kinetic energy of the projectile in kilojoules, if its speed is reduced with a factor of two: __________ kJ
3. Kinetic energy of the projectile in kilojoules, if it original speed is increased by a factor of three: ________ kJ
A 300 kg piano slides 4.50 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.40.
A bowling ball of mass 7.00kg is rolling at 3.00m/s along a level surface. Calculate the ball's rotational kinetic energy
A ball rolls down a hill 100 m. The hill is inclined 60 degrees. what is the final rotational speed of the ball
A 30.0 g goldfinch lands on a slender branch, where it oscillates up and down with simple harmonic motion of amplitude 0.0489 m, What is the maximum speed of the goldfinch
Consider two uniformly charged parallel plates as shown in the figure. The magnitudes of the charges areequal.If the plates are 1.0 cm by 1.0 cm squares,and the charges on the plates are +/- 2.6 μC respectively,what is the magnitude of the electric f..
A light burns out in your house, so you go to the store to buy a replacement. You can spend $22 to buy an equivalent LED bulb, spend $2 to buy a 60-watt incandescent light bulb, which only uses 12 W however is just as bright. On average, the bulb wil..
question an 85.8 g mass is attached to a horizontal spring with a spring constant of 5.52 nm and released from rest
The electric field of a plane electromagnetic wave is given by: Ex = 0, Ey = 0, Ez = 2.0 cos [0.6? x 1015 (t – y/c)], with all quantities in SI units.
A 111g Frisbee is 25cm in diameter and has half its mass spread uniformly in the disk and the other half concentrated in the rim. What is the Frisbee's rotational inertia
write a problem containing at least three forces of different magnitudes and directions which results in a constant
One proposed fusion reaction combines lithium 3Li6 (6.015 u) with deuterium 1H2 (2.014 u) to give helium 2He4 (4.003 u): 1H2 + 3Li6 ----> 22He4. How many kilograms of lithium would be needed to supply the energy needs of one household for a year, est..
It is always told as a fact without explaining the reason. Why do two objects get charged with rubbing? Why one object obtains negative charge and other get positive charge?
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