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Two disks are rotating about the same axis. Disk A has a moment of inertia of 3.7 kg · m2 and an angular velocity of +7.0 rad/s. Disk B is rotating with an angular velocity of -9.6 rad/s. The two disks are then linked together without the aid of any external torques, so that they rotate as a single unit with an angular velocity of -2.5 rad/s. The axis of rotation for this unit is the same as that for the separate disks. What is the moment of inertia of disk B?
A pulsed carbon dioxide laser has an energy output of 1.00 J. This energy is released in the form of a 10^9 W pulse of infrared radiation lasting 10^-9 s, Find the equivalent capacitance of the network
Find the magnitude of the acceleration of the particle. What are the x- and y-coordinates of the shell where it explodes,associated to its firing point.
A 4 kg block is acted upon by three horizontal forces. 10n (to left) 5n(short arrow to right) 25n to right. what is the horizontal acceleration of the block
A straight, stiff wire of length 1.00 m and mass 21g is suspended in a magnetic field B = 0.58T. The wire is connected to an emf. How much current must flow in the wire and in what direction so that the wire is suspended and the tension in the sup..
After hitting a long fly ball that goes over the right fielder's head and lands in the outfield, how much work was done on the player by friction
how fast is the mass moving when leaves the spring. Two forces, and , act at a point. has a magnitude of 9.00 and is directed at an angle of 65.0 degrees above the negative x axis in the second quadrant. has a magnitude of 6.00 and is directed at a..
Standing at a crosswalk, you hear a frequency of 590 Hz from the siren of an approaching ambulance. Determine the ambulance's speed from these observations
Suppose a spacecraft of mass 28000kg is accelerated to 0.25c, How much kinetic energy would it have
An object is placed to the left of a convex lens and on the optical axis. calculate the magnification of the image formed by the lens
A child slides down a slide with a 26° incline, and at the bottom her speed is precisely half what it would have been if the slide had been frictionless. Calculate the coefficient of kinetic friction between the slide and the child.
A 280-kg cylindrical piece of concrete pipe 1.0 m in diameter, 1.3 m long, and 3 cm thick is rolling toward you at a speed of 5 m/s. What is its approximate rotational angular momentum
Compute the force of gravity between a newborn baby (mass = 4 kg) and the planet Mars (mass = 6.4 x10^23 kg), when Mars is at its position closest to Earth (distance = 8.0 x10^10 m).
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