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A 20 kg block on an inclined plane is pulled up the plane with rope tied to the block. The rope is at angle of 37 degrees above the surface of the plane. The tension in the rope is 250 N and the frictional force on the block is 8.0 N. What is the acceleration of the block?
generator has a terminal voltage of 115 V when it delivers 18.0 A, alculate the emf (e m f) and the internal resistance (r) of the generator
A capacitor is charged by a 10 V ideal battery through a 100 Ohm resistor. It's voltage increases from 0 to 5V in 4 seconds. What is the capacitance of the capacitor
Two soccer players start from rest, 47 m apart. They run directly toward each other, both players accelerating. At the instant they collide, how far has the first player run
A uniform, solid metal disk of mass 6.10 and diameter 29.0 hangs in a horizontal plane, supported at its center by a vertical metal wire. What is the period of the torsional oscillations of the disk
A heat engine operates in a Carnot cycle between 90.0°C and 360°C. It absorbs 20,400 J of energy per cycle from the hot reservoir. How much energy does it expel in each cycle by heat
A 10.0g bullet is fired horizontally into a 101g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 141 N/m. The bullet becomes embedded in the block. If bullet-block system co..
A 7130-kg car is travelling at 32.7 m/s when the driver decides to exit the freeway by going up a ramp. After coasting 369 m along the exit ramp the car\'s speed is 13.5 m/s, and it is h = 11.9 m above the freeway. What is the magnitude of the averag..
A vertical spring stores 0.962 Joule in spring potential energy when a 3.5 kilogram mass is suspended from it. Find by what multiplicative factor does the spring potential energy change
The moment of inertia of a 0.98-kg bicycle wheel rotating about itscenter is 0.13kg .m2. What is the radius of this wheel, assuming the weight of the spokes can be ignored?
A hot-air balloon is ascending at the rate of 11 m/s and is 68 m above the ground as a package is dropped over the side. How long does it take to reach the ground.
An airplane travels at speed of 125 m/s in calm air. The plane wants to undergo a change of displacement delta x= 183 km i. How lond will it take the plane to reach its destination
The rear window of a van is coated with a layer of ice at 0°C. The density of ice is 917 kg/m3, What is the maximum thickness of ice above this area that the defroster can melt in 4.4 minutes
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