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A graph of v(t) is shown for a world-class track sprinter in a 100 m race.
Part (a) What is his average acceleration between 0.0 and 4.0 s, in meters per square second?
Romeo is chucking pebbles gently up to Juliet's window, and he wants the pebbles to hit the window with only a horizontal component of velocity. he is standing at the edge of a rose garden 4.5 m below her window and 5 m from the base of the wall. How..
A 38.00 kg girl is bouncing on a trampoline. All throughout a certain interval after she leaves the surface of trampoline, her kinetic energy decreases to 185J from 425J. How high does she rise all through this interval? Avoid air resistance.
Heather in her Corvette accelerates at the rate of (3.20i - 2.00j) m/s2, while Jill in her Jaguar accelerates at (1.00i + 3.20j) m/s2. How far apart are Heather and Jill
You measure an electric field of 1.26×106 N/C at a distance of 0.149 m. from a point charge. find the magnitude of the charge
A uniform disk with mass m = 9.09 kg and radius R = 1.37 m lies in the x-y plane and centered at the origin. Three forces act in the +y-direction on the disk: 1) a force 317 N at the edge of the disk on the +x-axis, 2) a force 317 N at the edge of..
A 3.19 kilogram box is pulled from rest a distance of 5.73 meter on an ice covered (frictionless) surface by a horizontal force. Obtain the average pulling force exerted on the box
A town needs about 20 Megawatts of power and the transmission station is 10 kilometer away. Determine the power lost in the electrical lines if the voltage supplied to the town is 50,000 Volt
A ball is thrown at a speed of 20m/s at an angle of 30 degrees above the horizontal. What is the time of flight of the ball
Suppose, you live in a place on the equator. There is a vertical rod of length 2m on your roof top. One morning, you went to the roof top and observed the shadow of the rod. If the length of the rod was 1m, then what time was that?
A circus performer stretches a tightrope between two towers. He strikes one end of the rope and sends a wave along it toward the other tower. He notes that it takes the wave 0.730 s to reach the opposite tower, 20.0 m away.
You and your friend throw balloons ?lled with water from the roof of a several story apartment house. You simply drop a balloon from rest. How high is the apartment house
A 4.0 kg ball is located at x= 4.0m, y= 0m. A 6.0 kg ball is located at x= 2.0m, y= 4.0m, and a 3.0 kg ball s located at x= -1.0m, y= -2.0m. obtain the location of the center of the mass of this system
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