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A tennis ball machine holds 200 balls and has a mass of 36.0 kg when empty. Each tennis ball has a mass of 57.0 g. A coach has set the machine to launch balls horizontally with a speed of 53.0 m/s. He forgot to set the brakes on the machine. If friction between the machine and the court is negligible and all 200 balls are launched, what is the final speed of the machine?
Calculate the binding energy of the last neutron in the 4320Ca nucleus. (Hint: You should compare the mass of 4320Ca with the mass of 4220Ca plus the mass of the last neutron. The mass of 4220Ca = 41.958622 u, whereas the mass of 4320Ca = 42.95877..
Determine the maximum deceleration it will experience and at what altitude? The capsule's BC is 1000 kg/m2 - what is the average drag acceleration ( in g's) we must attain?
In the figure to the left, the pulley (which is in the form of a disk) has a mass of 7.50 kg and a radius of 35 cm. What is the speed of the iron block
a single slit illuminated with a 500 nm light gives a diffraction pattern on a far screen. the 5th minimum occures at 7
A spaceship approaches the earth with a speed 0.50c. A passenger in the spaceship measures his heartbeat as 70 beats per minute. Determine what is his heartbeat rate
Two protons in a molecule are 3.90 x 10-10 m apart. Find the electric force exerted by one proton on the other
In a model AC generator a 502 turn rectangular coil 8 centimeter by 20 cm rotates at 123 rpm in a uniform magnetic field of 0.62T, Obtain the maximum emf induced in the coil
A pendulum is constructed from a thin, rigid, and uniform rod by a small sphere attached to the end opposite the pivot. This arrangement is a good approximation to a simple pendulum (period =3.72 s), because the mass of the sphere (lead) is much grea..
A meteorite that has a mass equal to 30.8 tonne (1 tonne = 1000 kg) is exhibited in the American Museum of Natural History in New York City, Find the magnitude of the impulse experienced by the meteorite up to the time its kinetic energy was halved
An automobile has aa vertical radio antenna 1.20 mlong. The automobile travels at 65.0 km/h on a horizontalroad where earths magnetic field is 50.0 uT directed toward thenorth, calcutate the magnitude of this induced emf
A train moving with constant velocity travels 190 north in 14s and an undetermined distance to the west. How far west has the train traveled
A 45 kg fiure skater is spinning on the toes of her skates at 1.0 rev/s. her arm outstretched as far as they will go. in this orientation, the skater can be modeled as a cylindrical torso(40kg, .2m average diameter,1.6m tall) plus two rod-like arms(2..
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