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a) What is the angular momentum of a 3.2 kg uniform cylindrical grinding wheel of radius 18 cm when rotating at 1500 rpm?
b) How much torque is required to stop it in 7.0 seconds?
(a) What must the initial speed of the ball be if the pitch is to arrive at the batter exactly 1.00 m above the ground? (b) How long does it take the ball to reach the batter? (c) If there were no gravity, at what angle would the pitch have to be ..
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 7.50 m/s at an angle of 25.0° below the horizontal. It strikes the ground 5.00 s later. (a) How far horizontally from the base of the building does..
1 you are conducting an osmosis experiment with a semi-permeable dialysis membrane of fixed pore size. if the solution
a fisherman is dozing when a fish takes the line and pulls it with a tension F the spool of the reel is at rest intialy, find the magnitude of the final angular velocity of the spool
A net is positioned a horizontal distance of 52.0 m from the cannon. Explain at what height above the cannon should the net be placed in order to catch the daredevil?
Two disks are rotating about the same axis. Disk A has a moment of inertia of 9.10 kg·m2 and an angular velocity of +8.10 rad/s. What is the moment of inertia of disk B
an ac power supply puts out a voltage V = 170sin(2n60t) and is connected to a resistor R = 20 ohm. what is the average power in W dissipated in the resistor
A block whose weight is 41.0 N rests on a horizontal table. A horizontal force of 36 N is applied to the block, what will be the block's acceleration? (If not, enter 0.)
Find the magnitude of the angular acceleration produced given the mass lifted is 13.5 kg at a distance of 28.0 cm from the knee join, the moment of inertia of the lower leg is 0.900 kg*m2, the muscle force is 1470 N and its effective perpendicular le..
an electron microscope accelerates an electron (mass of electron is 9.11x10^-31 kg) from rest to 2.8 x 10^7 m/s in a distance of 2.80 cm, what is the average force on the electron
Suppose you have a rectangular wooden block with dimensions 8.0 cm x 8.0 cm x 9.0 cm that has a density of 0.85 x 10^3 kg/m^3. What is the volume of the wood in the wooden block
A small piece of dust ofmass m = 2.3 µg travels through an electric aircleaner in which the electric field is 567 N/C. The electric force on the dust particle is equal to the weight of the particle.
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