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A pinball machine uses a spring launcher that is compressed 6.6 cm to launch a ball up a 17 °ramp. Assume that the pinball is a solid uniform sphere of radius r = 1.0cm and mass m = 28 g .If it is rolling without slipping at a speed of 3.1 m/s when it leaves the launcher, what is the spring constant of the spring launcher?
Two parallel, vertical, plane mirrors, 31.9 cm apart, face each other. A light source at point P is 29.8 cm from the mirror on the left and 2.1 cm from the mirror on the right. Find the number of reflections of light rays for each of these images
Two railroad cars, each of mass 7300 kg and traveling at 73 km/h, collide head on and come to rest. How much mechanical energy is lost in this collision
A concave spherical mirror forms a virtual image 1.51 times the size of the object. The distance among object and image is 23.3cm. Discover the magnitude of the radius of curvature of the mirror.
A cannon is placed on the ground and angled 36.87 above thehorizon, to shoot a balloon wich is 500 meters away. At what time does the cannon pass under the ballon
A toy cannon uses a spring to project a 5.28 g soft rubber ball. The spring is originally compressed by 5.06 cm and has a force constant of 8.08 N/m. At what point does the ball have maximum speed
A computer can fetch information from the memory in 3.0 ns, a process that involves sending a signal from the Central Processing unit (CPU) to memory and awaiting return of the information. find the maximum distance between the CPU and the memory
A converging lens of focal length 7.550cm is 20.5cm to the left of a diverging lens of focal length -6.50cm, find the location of the coins final image
A large electroscope is made with "leaves" that are 78 cm long wires with tiny 17g spheres at the ends. what total charge Q must have been applied to the electroscope
There is a clever kitchen gadget for drying lettuce leaves afteryou wash them. It consists of a cylindrical container mounted sothat it can be rotated about its axis by turning a hand crank. Theouter wall of the cylinder is perforated with small hole..
My friend Joe lives 2 Km north of my home. I start walking north from my home (at t = 0) at constant speed |v1| = 1 m/s. How far from Joe's home are we going to meet
A car travels up a hill at a constant speed of 31 km/h and returns down the hill at a constant speed of 47 km/h. Calculate the average speed for the round trip
In a pool game, the cue ball, which has an initial speed of 5m/s, makes an elastic collision with the eight ball, which isinitially at rest. Find the direction of motion of the cue ball after the collision
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