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A 0.20 kilogram baseball is dropped and reaches a speed of 1.0 m/s just before it hits the ground. It rebounds with a speed of 0.80 m/s. Find what is the change in the ball momentum?
A 45 kg figure skater is spinning on the toes of her skates at 1.0 rev/s. Her arms are outstretched as far as they will go. In this orientation, the skater can be modelled as a cylindrical torso (40 kg, 20 cm average diameter, 160 cm tall) plus two r..
If 20.0 kcal of heat aresupplied to 6.00 multiplied by 102 gof water at 23°C, what is the final temperature of the water
In an L-R-C series circuit, the resistance is 420 ohms, the inductance is 0.300 henrys, and the capacitance is 1.20×10?2 microfarads. what maximum voltage amplitude can the source have
A gymnast falls from the high bar and lands on a 10 cm thick gymnastics mat. Estimate the peak acceleration of the gymnast's head
Consider an H-like atom in the quantum mechanical description. How many electrons fit into the n=4 shell of this atom, assuming the states coincide with that of the H-atom?
A spherical mirror is polished on both sides. When the convex side is used as a mirror, the magnification is +1/4. What is the magnification when the concave side is used as the mirror, the object remaining the same distance from the mirror.
A solid disk of mass M and radius R is pivoted so that it can rotate about its center. The disk is initially at rest. A ball of mass m and speed v travels along a path tangential to the rim of the disk. The ball sticks to the disk and the assembly..
A technician wearing a circular metal band on his wrist moves his hand (from a region where the magnetic field is zero) into a uniform magnetic field of magnitude 2.0 T in a time of 0.30 s. find the magnitude of the average emf induced in the band
Light of wavelength 420 nm is incident normally on a film of water 1.0 µm thick. The index of refraction of water is 1.33, What is the wavelength of the light in the water
A toboggan approaches a snowy hill moving at 10.9 m/s. The coefficients of static and kinetic friction between the snow and the toboggan are 0.470 and 0.320, Find the acceleration of the toboggan as it is going up the hill
three vectors a b and c each have a magnitude of 50m and lie in the x-y plane. their directions relative to the
A charged particle moves through a velocity selector at a constant speed in a straight line, Calculate the charge-to-mass ratio of the particle.
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