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A tennis player swings her 1000g racket with a speed of 10m/s . She hits a 60g tennis ball that was approaching her at a speed of 21m/s . The ball rebounds at 40m/s .
1) How fast is her racket moving immediately after the impact? You can ignore the interaction of the racket with her hand for the brief duration of the collision.?
2) The tennis ball and racket are in contact for 12ms , what is the average force that the racket exerts on the ball?
A golf ball of mass 0.045 kg is hit off the tee at a speed of 32m/s . The golf club was in contact with the ball for 3.10×10?3s. Find the impulse imparted to the golf ball
Starting from rest, you move with a constant acceleration of 2.1 m/s2 for 15.0 s and then move with an acceleration of -2.1 m/s2 for another 15.0 s. How far do you go during the whole trip
A certain mixing tank has a capacity of 20 gallons and it is full of water with a small amount of bleach, Find the amount of bleach inside the tank at time t
Find out the depth of the kerosene
At some instant and location the electric field associated with an electromagnetic wave in vacuum has the strength 86.9 V/m. Find the magnetic field strength
Your television picture is created by 480 horizontal lines of pixels, arranged on a screen of total height h. Calculate this ratio D/h of minimum viewing distance to screen height
Calculate the molar Sakur-Tetrode entropy of gaseous argon at 25 C and atmospheric pressure
Two 4.9 cm× 4.9 cm metal plates are separated by a 0.19-mm-thick piece of Teflon. What is the maximum potential difference between the disks
Two batteries of emf and internal resistance e1,2 and r1,2 are connected in parallel. Find the effective emf and internal resistance
A 0.22kg billiard ball traveling at a speed of 16m/s strikes the side rail of a pool table at an angle of 60?. what is the magnitude of the the change in its momentum
question1a 27 kg chair initially at rest on a horizontal floor requires a 377 n horizontal force to set it in motion.
a 142 kg crate is placed on an inclined ramp. When the angle the ramp makes with the horizantal is increased to ALPHA, If the coefficient of static friction between the crate and the ramp is 0.65, what is the angle alpha when the crate just begins t..
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