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A block (mass = 2.3 kg) is hanging from a massless cord that is wrapped around a pulley (moment of inertia = 2.0 10-3 kg · m2), as the drawing shows. Initially the pulley is prevented from rotating and the block is stationary. Then, the pulley is allowed to rotate as the block falls. The cord does not slip relative to the pulley as the block falls. Assume that the radius of the cord around the pulley remains constant at a value of 0.037 m during the block's descent. Find the angular acceleration of the pulley and the tension in the cord.
1. A 1500 kg car travelling at 80.0 km/h comes to a screeching halt in a timeof 4.00 seconds. Calculate the force of friction experienced by the car.
Why does the final electron energy not depend on the grid voltage?
A lead bullet initially at 26.4oC melts just upon striking a target. calculate the speed of the bullet upon impact
If a mass of 1 kg is accelerated 1 m/s2 by a force of 1 N, illustrate what would be the acceleration of 10 kg acted on by a force of 20 N?
It is said that Galileo discovered a basic principle of the pendulum - that the period is independent of the amplitude, How long is the lamp chain?
You bring a 350 wrench into the house from your car. The house is 17 degree Celsius warmer than the car, Find the heat capacity of the wrench
A race car rounds a curve at 53 m/s. The radius of the curve is 450 m, and the car's mass is 620 kg. What is the centripetal force acting on the car
Find what is the minimum work needed to push a 950 kilogram car 810 meter up along a 9 degree incline
A magnetic field of 3 Tesla is oriented into the page. A 10 cm long conducting bar is pulled to the right at a constant speed of 3.4 m/s. What is the magnitude of the current in the bar
Two stars are at rest 1.0×1014m apart. This is about 10 times the diameter of the solar system. What is the speed of each star at the moment of impact
A length of copper wire carries a current of 17 A, uniformly distributed during its cross section. The wire diameter is 2.5 mm, and its resistance per unit length is 4.0 /km. Compute the energy density of the magnetic field at the surface of the wire..
Use the Non-GMO Project site. At top of Home Page click on-GMO Facts then use the drop down menu then click on-What is GMO?
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