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A 2.0 kg and a 1.0 kg ball are connente by a rigid massles rod whose length is 1 m. It is spinning ccw at 20 rpm. What torque will bring the balls to a stop in 5 s. The answer is .28 N*m in the ccw direction. How do I find this?
The author's cat enjoys chasing chipmunks in the front yard. In this game, the cat sits at one edge of a yard that is w = 29 m across (see figure), watching as chipmunks move toward the center.
We supply 132.4 Joules of heat to an engine with 15.60% efficiency. How much work can the engine do
the wire in the drawing carries a current of 9.3 a. suppose that a second long straight wire is placed right next to
The pressure of an ideal gas remains at 200 Pa while 1000 joules of heat are removed and its internal energy increases by 2000 joules. What was the change in the volume of the gas
two uniform solid cylinders each rotating about its central longitudinal axis have the same mass of 4.90 kg and rotate
A car is driving 22.7m/s flat ground drives off 42.3 m high cliff. How much time does it take to reach the ground.
A mirror has a focal length of 10 cm. An object is located 15 cm to the left of the mirror. What is the total magnification for the two images
Two telephone poles are separated by 40 m and connected by a wire. A bird of mass 0.50kg lands on the wire midway among the poles, causing the wire to sag 2.0 m below horizontal. Assuming the wire has negligible mass, what is the tension in the wire?
FM radio stations use radio waves with frequencies from 88.0 to 108 MHz to broadcast their signals. Assuming that the inductance in the figure has a value of 7.50 10-7 H, determine the range of capacitance values that are needed so the antenna can..
Find the emissivity of a surface that radiates heat at the same rate that it loses heat through convection when its temperature is 107° C
two very large metal parallel plates that are 25cm apart oriented perpendicular to a sheet of paper are connected
A neutron star is composed of neutrons and has a densitythat is approximately the same as that of a nucleus. What is the radius of a neutron star whose mass is one-fifth of the mass of the sun
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