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A 6.2-m radius playground merry-go-round with a moment of inertia of 2400 kg·m2 is rotating freely with an angular speed of 1.5 rad/s. Two people, each having a mass of 65 kg, are standing right outside the edge of the merry-go-round and step on it with negligible speed. What is the angular speed of the merry-go-round right after the two people have stepped on?
You take the elevator to the roof of midtown skyscraper that is 100 meters high. What was the velocity of your souvenir just before it hit the ground
Suppose we rely upon friction between the wall and the rod to hold up the sign (there is no hinge attaching the rod to the wall). What is the smallest value of the coefficient of friction
What is the terminal speed for an 79 skier going down a 36 snow-covered slope on wooden skis = 0.060? Assume that the skier is 1.8 m tall and 0.50 m wide.
A 69-kg construction worker stands at the far end of the beam. What is the magnitude of the torque about the point where the beam is bolted in place.
What is water speed along the boat during the vertical cross
It rolls at a steady speed for 1.9 s, then one wheel begins to stick. The train comes to a stop 6.0 m from its starting point. Illustrate what is the train's acceleration after its wheel begins to stick?
A 3.5 m long, 310 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 70 kg construction worker stands at the far end of the beam.
A lamp which is 12.0 cm tall is 286.8 cm in front of a converging lens which has a focal length of 77.5 cm. What is the image distance for this lamp
Calculate the electric force that exists between two objects that are 0.500m apart and carry charges of 0.00450C and 0.00240C. Is this force attractive or repulsive
As an eager scientist on a hot summer day you wish to determine how much ice to buy to add to your cooler which is filled with 3.0x10^1 cans of soda which are warm at 86.5F. how much ice needs to be added to your cooler
A 2.00 meter long, straight rod is 1.00 mm in diameter an is made of pure copper (specific gravity 8.93). What is the potential difference between the ends on the wire
Refer to Interactive Solution 25.21 for help with problems like this one. How far from the wall should the mirror be located
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