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Calculate the force on a dielectric slab inserted partly into a parallel plate capacitor with plate dimensions L and w, with a length x of the dielectric lying between the plates. Assume that the plates are isolated, so the charge ±Q on the plates is constant.Now suppose the capacitor stays connected to a battery so the potential difference V stays fixed. Calculate the force on the slab for this case, and compare to the result obtained for isolated plates.
A boy in a wheelchair (total mass 51.0 kg) has speed 1.40 m/s at the crest of a slope 2.40 m high and 12.4 m long.Find the work he did in pushing forward on his wheels
When 22.9 J was added as heat to a particular ideal gas, the volume of the gas changed from 54.3 cm3 to 100 cm3 while the pressure remained at 1.00 atm. By how much did the internal energy of the gas increase
The latent heat of vaporization of H2O at body temperature (37.0°C) is 2.45E+6 J/kg. how many kilograms of water in the form of sweat have to be evaporated
q1. a meterstick is at rest in an inertial frame s2. if s2 moves with a speed of 0.7c with respect to a rest frame s1
A small, spherical bead of mass 3.05 g is released from rest at t = 0 in a bottle of liquid shampoo. The terminal speed is observed to be vT = 1.80 cm/s. Find the value of the resistive force when the bead reaches terminal speed
A playground merry-go-round has a disk-shaped platform that rotates with negligible friction about a vertical axis. how fast will the disk be turning
Two blocks of masses m1 = 2.00 kg and m2 = 4.40 kg are each released from rest at a height of h = 4.00 m on a frictionless track, Determine the velocity of each block just before the collision
You are given a thin circular ring of radius a that has a charge uniformly distributed on it with a linear charge-density λ. Find the increase in the tension in the ring
The electron mass is 9×10?31 kg. What is the magnitude of the momentum of the electron
What is the electric potential between the two terminals. A capacitor is formed by placing a 20 cm long charge carrier charged to +10nC placed 5cm away from and parallel to a 20 cm long charge carrier charged to -10 nC. Find the electric field at 1..
For a diverging lens (f = -22.0 cm), find the image distance for an object that is 22.0 cm from the lens. Determine the magnification of the lens
The altitude of a hang glider is increasing at a rate of 6.80 m/s. At the same time, the shadow of the glider moves along the ground at a speed of 15.5 m/s when the sun is directly overhead. Calculate the magnitude of the glider’s velocity.
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