What is the force exerted by the ball on the kicker-s foot
A barefoot field-goal kicker imparts a speed of 51 m/s to a football initially at rest. If the football has a mass of 0.56 kg and the time of contact with the ball is 0.027 s, what is the force exerted by the ball on the kicker's foot?
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A hydrogen atom is in its n = 6 excited state. Determine, according to quantum mechanics, each of the following: The maximum value that the z component of the Lz of the angular momentum can have
A car moving at 9 m/s crashes into a barrier and stops in 0.050 s. There is a 20 kg child in the car. Assume that the child's velocity is changed by the same amount as the car's in the same time period. What is the impulse needed to stop the child
A 9300 kg boxcar traveling at 20 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 10 m/s. What is the mass of the second car?
Mercury is poured into a tall glass. Ethyl alcohol (which does not mix with mercury) is then poured on top of the mercury until the height of the ethyl alcohol itself is 129 cm. The air pressure at the top of the ethyl alcohol is one atmosphere. W
If the football has a mass of 0.56 kg and the time of contact with the ball is 0.027 s, what is the force exerted by the ball on the kicker's foot?
A projectile is launched from ground level at 100m/s at an angle of 45.0 degrees above the horizantal, and it is subject only to gravity.
A lightning bug flies at a velocity of 0.25 m/s due east toward another lightning bug seen off in the distance. A light easterly breeze blows on the bug at a velocity of 0.25 m/s. What is the resultant velocity of the lightning bug?
At the position of the negative charge, what is the magnitude of the electric field due to the three positive charges? What is the magnitude of the attractive force on the negative charge?
A 28.0 {rm kg} block is connected to an empty 1.80 {rm kg} bucket by a cord running over a frictionless pulley. The coefficient of static friction between the table and the block is 0.48 and the coefficient of kinetic friction between the table an
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What approach can be taken to help them conform with those social norms. If the individual is shamed because of it what would
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