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A diver can change his rotational inertia by drawing his arms and legs close to his body in the tuck position. After he leaves the diving board (with some unknown angular velocity), he pulls himself into a ball as closely as possible and makes 2.00 complete rotations in 1.33 s. If his rotational inertia decreases by a factor of 3.00 when he goes from the straight to the tuck position, find his angular velocity when he left the diving board?
Ball A is attached to one end of a rigid massless rod, while an identical ball B is attached to the center of the rod, Find the tension in each half of the rod
A 17 g bullet is accelerated in a rifle barrel 73.4 cm long to a speed of 493 m/s. Use the work-energy theorem tofind the average force exerted on the bullet while it is being accelerated. Answer in units of N.
In extremely cold weather conditions where the inside thermostat is set to 27 C and the outside temperature is -20 C, How much energy might you lose in one week
An athlete executing a long jump leaves the ground at a 34.8 degrees angle and travels 7.86m. how much longer would the jump be
A 15 kg flywheel has all its mass around its outer rim. A string is wrapped around it and a m = 3.7 kg weight is hanging on the string. The flywheel has radius R = 0.25 m. What is the angular acceleration at this point?
a turbine that uses steam drives an electric generator. the inlet stream flows through a 10 cm diameter pipe to the
A 15 μF capacitor is connected to a 50 Volt battery and fully charged. Obtain the voltage across the capacitor plates will be
Three blocks (A,B,C), each having mass M, are connected by strings as shown. Block C is pulled to the right by a force F that causes the entire system to accelerate. Neglecting friction, what is the net force acting on block B?
You drop a stone into a deep well and hear it hit the bottom 1.80 s later. This is the time it takes for the stone to fall to the bottom of the well, plus the time it takes for the sound of the stone hitting the bottom to reach you. Sound travels ..
now you are playing with your bestfriends favorite toy, a ball on a string. the ball's mass is 3kg and the string is 1.1 m long. how fast can you twirl the ball (in a horizontal surface) without breaking your best friends toy
An astronomical telescope has its two lenses spaced 75.2 cm apart. If the objective lens has a focal length of 74.5 cm, what is the magnification of this telescope? Suppose a relaxed eye.
Ten boxes, each 21.0 cm high and weighing180 N, initially are all side by side onthe floor. The boxes are lifted and placed in a vertical stack2.10 m high in a time interval of6.50 s. Compute the power necessary tostack the boxes.
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