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A major league catcher catches a fastball moving at 80.0mi/h and his hand and glove recoil 10.0 cm in bringing the ball to rest.
If it took 0.00500s to bring the ball (with a mass of 300g ) to rest in the glove, what is the of the change in momentum of the ball?
What is the direction of the change in momentum of the ball?
Find the magnitude of the average force the ball exerts on the hand and glove?
Find the direction of the average force the ball exerts on the hand and glove?
A drag racer starts from rest and accelerates for 12.3 s with a constant acceleration until it has travelled 400 m. What is the stopping distance for the drag racer
A 35 mm camera with interchangeable lenses is used to take a picture of a hawk that has a wing span of 1.5 m. The hawk is 39 m away. What would be the ideal focal length of the lens used
A basketball of mass 0.45 kg is dropped from rest from a height of 1.22 m. It rebounds to a height of 0.72 m. How much mechanical energy was lost during the collision with the floor
What potential is generated on a plane's wings when it flies through the earth's magnetic field
A uniformly charged insulating rod of length 19.0 cm is bent into the shape of a semicircle. The rod has a total charge of -7.50 µC. Find the magnitude and direction of the electric field at O, the center of the semicircle. EO = N/C.
The density of a pail of water is 10.0g/cm. An object has sunk to the bottom of the pail. What is the density of the object
A uniform magnetic field of 0.50 T is directed along the positive x axis. A proton moving with the speed of 60 km/s enters this field. The helical path followed by the proton shown has a pitch of 5.0 mm. find the angle between the magnetic field an..
The coefficient of kinetic friction between the lighter block and the plane is 0.10 the lighter block leads, find the tension in the taut string
A flat sheet of sodium chloride has a thickness of 2.50 cm. It is on top of a flat sheet of fused quartz that has a thickness of 1.26 cm, how far (in cm) would it have traveled in a vacuum
The Earth (5.98 x 10^24 kg) and the Moon (7.35 x 10^22) kg are separated by an average distance of 3.84 x 10^8 m
The aircraft carrier John F. Kennedy has mass 7.4 107 kg. When its engines are developing their full power of 280,000 hp, the John F. what is the magnitude of the force of water resistance
An 800 kHz radio signal is detected at a point 9.5 km distant from the transmitter tower. Find the average electromagnetic energy density
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