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A system containing an ideal gas at a constant pressure of 1.22 *10^5 Pa gains 2140 J of heat. During the process, the internal energy of the system increases by 2320 J. What is the change in volume of the gas?
Two wires are identical, except that one is silver (resistivity = 1.59×10-8 ?·m) and the other is platinum (resistivity = 1.06×10-7 ?·m). What is the resistance of the platinum wire
A 50 turn square coil has an area 15.0 cm2 and is rotated with an angular speed of 80.0 rads in a uniform 0.40 T magnetic field. What is the peak voltage induced across the ends of the coil
The intensity of sound wave A is 100 times that of sound wave B. Relative to wave B, find the sound level of wave A
Nerve cells are long, thin cylinders along which electric disturbances (nerve impulses) travel. determine the magnitude of the charge density on the inner and outer cell walls
A moon orbits a planet of unknown mass with a period of 1.8 days. If the radius of the moon's orbit is 420,000,000 meters, find the mass of the planet. Determine the centripetal acceleration of the moon
A lid is put on a box that is 14 cm long, 13 cm wide, and 8.0 cm tall and the box is then evacuated until its inner pressure is 7.3 104 Pa. How much force is required to lift the lid at sea level
a 24-inch string is wrapped around the 18-inch radius axis of a yo-yo. starting from rest the yo-yo descends with a
A 3.5 k and a 1.5 k resistor are connected in parallel and this combination is connected in series with a 1.8 k resistor. If each resistor is rated at 1/2 W, what is the highest voltage that can be applied across the whole network.
A spring of k=12.00 N/m has a block of mass 11- kg attached to it on a frictionless table. If the block is pulled a distance 0.17m to the right and released from rest, how long would it take the block to return to its equilibrium position? Give yo..
A slab of copper of thickness b = 6.944×10-1 mm is thrust into a parallel-plate capacitor of C = 7.00×10-11 F of gap d = 5.0 mm, How much work is done on the slab as it is inserted
A 10-turn circular couil of radius 20mm carries a current of0.50 A. Find the magnetic field magnitude at its center
A uniform 2.45- kg spinning disk with a radius of 0.253 m is brought to rest by a brake-pad pressed against the side 0.200 m from the rotation axis. The wheel is brought to rest from an angular velocity of 18.7 rad/s in a time of 21.1 s. What frictio..
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