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Q. The puck has a mass of 0.140kg. Its original distance from the center of rotation is 40.0 cm, and it moves with a speed of 70cm/s. The string is pulled downward 15cm by the hole in the frictionless table. Determine the work completed on the puck. (Hint: Consider the change of kinetic energy of the puck.)
What is the work done by the tension in the cable.assume the roller coaster (h1 = 34 m, h2 = 13 m, h3 = 30) passes point A with a speed of 3.10 m/s. If the average force of friction is equal to one third of its weight, with what speed will it reach..
What is Johns resultant displacement
Determine the position of the GPS satellite relative to and from the center of the earth and ratio of clock rates on a GPS clock in orbit and one on the surface of the earth.
An airplane is flying with a velocity of 85.0 m/s at an angle of 25.0 degrees above the horizontal. When the plane is a distance 117 m straight above a dog that is standing on level ground, a suitcase drops out of luggage compartment. How far from..
A copper telephone wire has essentially no sag between poles 20.5 meters apart on a winter day while the temperature is -15.5° C. How much longer is the wire on the summer day when the temperature is 27.0° C.
make Use of a 9.81 m/s^2 for the magnitude of the acceleration due to gravity.
A friend is standing on a giant skateboard that is initially at rest. If you avoid frictional effects with the floor, what is the momentum of the skateboard if your friend walks to the right on skateboard with a momentum of 150 kg.m/s? What is the..
While the positions of these balls are fixed, ground the ball X and then break the grounding. when X and Y remain in touch, remove Z. Then divide X and Y. What are the charges (if any) on each of the balls.
Compute the force that acts on a square access hatch at the bottom of the tank that measures 0.25m by 0.25m.
An insulated Thermos contains 210 cm3 of hot coffee at 88 °C. You put a 19.00 g ice cube at its melting point to cool the coffee. By how many degrees has the coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as though..
Two carts with masses of 5.00 kg and 2.64 kg move toward each other on a frictionless track with speeds of 4.86 m/s and 3.46 m/s correspondingly. The carts stick together after colliding head-on. Find the final speed.
A train is travelling up a 4.8^circ incline at a speed of 3.25m/s while the last car breaks free and begins to coast without friction.
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