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A tennis ball has a velocity of 22 m/s and a mass of 58.7 g. After the ball hits a tennis racket, the velocity becomes twice that of the original speed and goes in the opposite direction. What is the force between the ball and the racket if the time that they interact is 0.04 s? Assume the force is constant.
A merry-go-round starts from rest and accelerates uniformly over 23.5 s to the final angular velocity of 6.55 rev/min.
An air-hockey pucks floats across the table and bumps into a second puck, initially at rest. The first puck - mass 0.0250 kg - is moving initially due east at 5.50 m/s. Find the speeds of both pucks after the bump
How various lines per centimeter does a grating have if the third-order occurs at a 23.0 degree angle for 630-nm light.
A sodium atom (Z = 11) contains 11 protons in its nucleus. Strictly speaking, the Bohr model does not apply, determine the corresponding radius r of the outermost Bohr orbit
In a He+ ion, the electron is in 3S state Assume that units can be chosen that a = 4 ? ?0 h2 / (M e2) = 1, write down the corresponding wavefunction
An object is 32cm in front of a converging lens with a focal length of 6.9cm, Use ray tracing to determine the location of the image
find the highest distance throughout which his center of gravity can fall without his breaking a bone.
If the hanging 13.8 kg block falls a distance 0.633 m before coming to rest, calculate the coefficient of kinetic friction between the block m1 and the surface
A 60.0-kg runner expends 325 W of power while running a marathon. determine the volume of bodily fluid (assume it is water) lost per hour
A battery has an internal resistance of 0.60 ?. A number of identical light bulbs, each with a resistance of 9.6 ?, How many bulbs are connected
A person of mass 89.70 kg escapes from the burning building by jumping from a window situated 27.50 m above a catching net.
Two capacitors of capacitance 6.00 microFarad and 8 microfarad are connected in parallel, What is the potential difference across the 6.00-uF capacitor
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