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A parallel-plate capacitor with circular plates and a capacitance of 13.9F is connected to a battery which gives a voltage of 12.8V. What is the charge on each plate? How much charge would be on the plates if their separation were doubled while the capacitor remained connected to the battery? How much charge would be on the plates if the capacitor were connected to the battery after the radius of each plate was doubled without changing their separation?
A photon has an energy equal to the kinetic energy of an electron with speed, u, which may be close to the speed of light, c. Calculate the ratio of the wavelength of the photon to the wavelength of the electron
Water flows straight down from an open faucet. The cross-sectional area of the faucet is 1.60 10-4 m2, obtain the cross sectional area of the water stream
Camera A has a lens with an aperture diameter of 8.30mm, What exposure time should be used with camera B in photographing the same object with the same film if this camera has a lens with an aperture diameter of 23.5mm
Light from an argon laser strikes a diffraction grating that has 6600 grooves per centimeter. The central and first-order principal maxima are separated by 0.320 m on a wall 1.00 m from the grating. Determine the wavelength of the laser light.
Boxes A and B have masses of 12 kg and 4 kg, in that order. The two boxes are released from rest. Use conservation of energy to find out the boxes speed when box B has fallen a distance of 00.5 m.
A tow truck pulls a car 5.00 \rm km along a horizontal roadway using a cable having a tension of 850 \rm N. How much work does the cable do on the car if it pulls horizontally
Suppose you are at the earth's equator and observe a satellite passing directly overhead and moving from west to east in the sky. How far above the earth's surface is the satellite's orbit
Two waves are generated on a string of length 3.0 m to produce a three-loop standing wave with an amplitude of 4.6 cm, What are the lowest frequency
A rock is dropped off the side of a bridge and hits the water below 5.7 s later. What was the rock's velocity when it hit the water
The fan blades on a jet engine make one thousand revolutions in a time of 81.8 ms. What is the angular frequency of the blades
You are looking straight down on a magnetic compass that is lying flat on a table. A wire is stretched horizontally under the table, parallel to and a short distance below the compass needle.
Coherent light with wavelength 546 nm passes through two very narrow slits, and the interference pattern is observed on a screen the distance of 3.00 {rm m} from the slits. The first-order bright fringe is a distance of 4.86 {rm mm} from the center o..
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