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A base ball has mass 0.145 kg.
(a) If the velocity of a pitched ball has a magnitude of 45.0 m/s and the batted ball's velocity is 55.0 m/s in the opposite direction, find the magnitude of the change in momentum of the ball and of the impulse applied to it by the bat.
(b) If the ball remains in contact with the bat for 2.00 ms, find the magnitude of the average foce applied by the bat.
In the process of delivering maila postal worker walks 161 meter due east from his truck.he then turns around and walked 194 meter from his truck
An evacuated spherical diving bell containing a camera is in the ocean at a depth of 187 m. Find the magnitude of the total force on the port
Two figure skaters, one weighing 625N and the other 700N , How much kinetic energy is created during the skaters maneuver
A 8.05 k? and a 7.05 k? resistor are connected in parallel. This combination is then connected in series with a 2.95 k, what is the maximum voltage that can be applied across the whole network
A crate of mass 14.0 kg is pulled up a rough incline with an initial speed of 1.50 m/s. How much work is done by gravity
The maximum angular magnification of a magnifying glass is 12.0 when a person uses it who has a near point that is 25.0 cm from his eyes. Obtain the focal length of the objective
A piano tuner sounds two strings simultaneously. One has been previously tuned to vibrate at 284.0 Hz. The tuner hears 5.0 beats per second. What was the original frequency of the untuned string
The flywheel of an old steam engine is a solid homogeneous metal disk of mass M = 129 kg and radius R = 85.3 cm. How long does it take for the flywheel to come to rest
Consider two identical 25-micro-coulomb point charges, each of 18 mg mass. Let them initially be at rest, 80 cm apart. How fast (in m/s) will each charge be moving when the charges are very far apart
Use 9.81 for the magnitude of the acceleration due to gravity.
What is the total charge of all the electrons in a 16 kg bar of iron, What is the net charge of the bar if it managed to get rid of 2% of the electrons
A high diver of mass 65kg jumps off a board 10m above the water. If her downward motion is stopped 1.70 s after she enters the water, what average force did the water exert on her.
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