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A tennis player swings her 1090 gram racket with a speed of 10.2 m/s. She hits a 53 gram tennis ball that was approaching her at a speed of 18.7 m/s. The ball rebounds at 38.3 m/s. Determine how fast is her racket moving immediately after the impact? Neglect the interaction of the racket with her hand for the brief duration of the collision.
If the tennis racket and ball are in contact for 9.3 milliseconds, find the average force that the racket exerts on the ball? Define how does this compare to the gravitational force on the ball?
In a photoelectric effect experiment, a metal sample is illuminated by 10.0 mW of ultraviolet light of wavelength 240 nm. What is the longest wavelength of light that can knock electrons out of this metal
A lead brick with the dimensions (6.0 cm leftto right, 5.0 cm front to back and 2.0 cm top to bottom) rests on arough, solid surface. Find the change in height of the brick
A 3440 kg statue is supported by a glass stand. The cross-section of the stand is square, 0.15 m to a side. Before the statue was placed on the stand, How much is the stand compressed by the statue
What is the frequency of rotationA 10kg baby is perched at the rim of a 40kg disk. The disk rotates freely in a horizontal plane at 1 rev/s. What is the frequency of rotation in rev/s when the baby arrives at the center
A projectile is launched with a speed of 18m/s at an angle of 65 degrees to the horizontal. What is the maximum range of the projectile
a heater and a motor are powered in parallel from the same 220v power supply. the motor draws 2A and the heater draws 17A. what is the total power dissipated by the dryer
A hot water stream at 80 degrees C enters a mixing chamber with a mass flow rate of 0.5kg/s where it is mixed with a stream of cold water at 20 degrees C. If it is desired that the mixture leave the chamber at 42 degrees C,
a string has a linear density of 4.80 10-3 kgm and is under a tension of 345 n. the string is 1.5 m long is fixed at
Two spectators at a soccer game in Montjuic Stadium see, and a moment later hear, the ball being kicked on the playing field. The time delay for the spectator is 0.23 s, and for spectator B it is 0.12 s.
The cable of the 1300 kg elevator cab in the figure snaps when the cab is at rest at the first floor, Find the speed of the cab just before it hits the spring
While a person is walking, his arms swing through approximately a 45.0 degree angle in 0.510 s. What force would the blood vessel exert if the arm were not swinging
a circular conducting loop of radius 17.0 cm is located in a region of homogeneous magnetic field of magnitude 0.100 t
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