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When catching a baseball, a catcher's glove moves by 8 cm along the line of motion of the ball. If the baseball exerts a force of 445 N on the glove, how much work is done by the ball?
A mass of 12.5 kg is hanging by a steel wire 1.13 m long and 1.03 mm in diameter. If the mass is pulled down slightly and released, what will be the frequency of the resulting oscillations
The image of a very distant car is located 35 cm behind a convex mirror. What is the radius of curvature of the mirror
A 900 g rubber ball is dropped from a height of 14 m and undergoes a perfectly elastic collision with the earth. What is the earth's velocity after the collision
Find the wavelength of light emitted by a hydrogen atom, when the electron moves from n = 7 quantum state to n = 5 quantum state
A battery having an emf of 9.80 V delivers 109 mA when connected to a 60.0 load. Determine the internal resistance of the battery
A wheel turns with a constant angular acceleration of 0.600rad/s^2. Through how many revolutions does the wheel turn in this interval
electrons flow through a 2.2 mm diameter aluminum wire at 2.2 x 10^-4 m/s. *electron density of aluminum is 6 x 10^28 m^-3*
If each rock strikes the fixture traveling at 10.0 {rm m}/{rm s} horizontally and rebounds at 2.00 {rm m}/{rm s} backwards, find out how high above the lowest point does the impact make your light fixture swing?
a satellite that weighs 4900N on the launchpad travels around the earths equator in a circular orbit with a period of 1.667h. determine the altitude of the satellite above the earths surface
An airplane travels x = 4.50 x 10^2 km due east and then travels an unknown distance y due north. Finally, it returns to its starting point by traveling a distance of r = 525 km. How far did the airplane travel in the northerly direction.
The two upper front teeth of a person exert a total force of 30N on a piece of steak. If the biting edge of each tooth measures 10 mm x 1 mm, find out the pressure on the steak.
In a long solenoid, the density of the wire is 180 turns/cm. If the current in the wire is 0.680 A, what is the strength of the magnetic field within the solenoid
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