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The merry-go-round is moving at a speed of 0.3 rev/sec when it shuts down. It completes 3 revolutions before coming to rest.
a) What is the initial angular velocity of the merry-go-round?
b) How much time does it take the merry-go-round to come to rest?
A child in a boat throws a 5.600 kg package out horizontally with a speed of 11.00 m/s. Determine the velocity of the boat immediately after, assuming it was initially at rest. The mass of the child is 23.00 kg and that of the boat is 45.00 kg.
A 61.0 kg skier encounters a dip in the snow's surface that has a circular cross section with a radius of curvature of 12.0 m .If the skier's speed at point A is 7.50 m/s (before entering dip), what is the normal force exerted by the snow on the skie..
A man pushes a box with a constant horizontal force. The mass of the box is 150 kg, the coefficient of kinetic friction between the box and the floor is 0.25, Find the work done by the man
A sensitive gravimeter at a mountain observatory finds that the free-fall acceleration is 9.00×10?3m/s2 less than that at sea level
They stick together after the collision and are going 10 m/s after the collision. If they skid for 6seconds before stopping, how far did they skid?
A mini-fridge needs to maintain a temperature of 277 K. The air outside the mini-fridge has a temperature of 292 K. What is the power output (that is, the work done per second) of the compressor in the mini-fridge
Suppose a 76 kg person hangs vertically from a nylon rope. What radius must the rope have if its fractional increase in length is to be the similar as that of the spider's thread.
A parallel-plate capacitor has plates of area A and separation d and is charged to a potential difference, find The inital and final stored energy
A cylindrical container 1.6 m tall contains mercury to a certain depth d. The rest of the cylinder is filled with water. If the pressure at the bottom of cylinder is two atmospheres, what is the depth d.
In a head-on collison with an atom, a fast-moving electron suffers a deceleration of 4.0x10^23 m/s^2. What is the electric radiation field generated by the electron at a distance of 10 cm at right angles to the direction of motion
A uniform rod of mass 1.5kg and Length=0.18m rotates clockwise on the plane of your paper at an initial rate of 40rev/s about its central axis. Determine the initial angular momentum of the rod
For saving energy, bicycling and walking are far more efficient means of transportation than is travel by automobile. For example, when riding at 11.0 mi/h, Find the fuel economy in equivalent miles per gallon for a person walking
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