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Your roommate is working on his bicycle and has the bike upside down. He spins the 58.0cm -diameter wheel, and you notice that a pebble stuck in the tread goes by three times every second.
1. What is the pebble's speed?
2. What is the pebble's acceleration?
The crane pulls on the slab with a force of 4000N at an angle of 20o to the left of vertically upward. The only other force acting on the slab is the force of air resistance. What is the magnitude of the force of the air resistance? What is the di..
Use the information you obtained from your graph to determine the total mass of the system M = m1 + m2. Using the information you obtained in parts (a) and (b), predict what the value of the acceleration would be if the value of the hanging mass we..
At what average rate does the force from the cable. A student standing on the ground throws a ball straight up. The ball leaves the student's hand with a speed of 15 {rm m}/{rm s} as the hand is 2.0 {rm m} above the ground.
A 63.0 kg astronaut is ona spacewalk when the tether line to the shuttle breaks. the astronaut is able to throw a 10.0 kg oxygen tank in a direction away from the shuttle with a speed of 12m/s, propelling the astronaut back to the shuttle.
A portion of Nichrome wire of radius 3.95 mm is to be used in winding a heating coil. If the coil must draw a current of 9.70 A when a voltage of 120 V is applied across its ends, find the following. (Take the resistivity of nichrome to be 1.50 10..
A 12 Volt lead acid automobile battery, engineered for up to 500 or more charge/discharge cycles, Find what is the total electrical energy that the battery can deliver
A pipe 0.026 m in diameter and 0.22 m long can transfer 3476 J of heat per second with a temperature difference across the ends of 7?C. Compare this performance with the heat transfer of a solid silver bar of the same di- mensions by finding the rati..
As an energy-efficiency consultant, you're asked to assess the pumped-storage facility. Its reservoir sits 136 above its generating station and holds 9.0×10^9 of water. The power plant generates 315 of electric power while draining the reservoir over..
A 67.0 kg diver is 2.30 m above the water, falling at speed of 6.70 m/s. Calculate her kinetic energy as she hits the water
A motorcycle traveling with a constant acceleration of 2.0 m/s sq crosses a 100 m long bridge in 4.23 sec. What was the velocity at the end of the bridge
A person, with his ear to the ground, sees a huge stone strike the concrete pavement. A moment later two sounds are heard from the impact: one travels in the air and the other in the concrete, and they are 6.60s apart. How far away did the impact ..
An iron tower in is 372 meters tall on a cold day (T = -7.1 degrees Celsius). What is its height of the tower on a hot day
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