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A parallel-plate capacitor with only air between the plates is charged by connecting it to a battery. The capacitor is then disconnected from the battery, without any of the charge leaving the plates. A voltmeter reads 50.0 when placed across the capacitor. When a dielectric is inserted between the plates, completely filling the space, the voltmeter reads 12.5 . What is the dielectric constant of this material?
A Mercedes-Benz 300SL (m = 1800 kg) is parked on a road that rises 10° above the horizontal. What is the static frictional force that the ground exerts on the tires
A golf ball strikes a hard, smooth floor at an angle of 29.0 ° and, as the drawing shows, rebounds at the same angle. What is the magnitude of the impulse applied to the golf ball by the floor
A thin rod consists of two parts joined together. One-fourth of it is silver and three-fourths is gold. The temperature decreases by 21 C°.
Block A, with a mass of 2.4 kg, is stationary, while block B, with a mass of 8.6 kg, is moving at 8.1 m/s. What is the speed of the center of mass of this two-block system
A horizontal plank 4.00 m long and having mass 20.0 kg rests on two pivots, Find the magnitude of the force exerted on the plank by the second pivot
A d = 4.57 mm diameter wire carries an electric current of I = 14.3 A when the electric field is E = 7.53×10-2 V/m along the wire. What is the conductivity of the wire
question 15 swallows flew 380 miles south to escape the cold. after resting for a day they flew another 800 miles
Using a 695-nm wavelength laser, you form the diffraction pattern of a 0.103-mm wide slit on a screen. How far is the screen located from the slit
Select True or False for the following statements about conductors in electrostatic equilibrium. The electric field inside the conducting material is always zero.
a television channel is assigned the frequency range from 54 mhz to 60 mhz. a series rlc tuning circuit in a tv
The suspension system of your 1200 kg car has a natural oscillation frequency of 2:00 Hz without functioning shock absorbers. find At what speed are you driving
A 100-g ice cube at 0 degrees C is placed in 650 g of water at25 degrees C. What is the final temperature of the mixture
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