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Two circular disks spaced 0.50 mm apart form a parallel-plate capacitor. Transferring 1.70 x 10^9 electrons from one disk to the other causes the electric field strength to be 2.60 x 10^5 N/C. What are the daimeters of the disk?
A 16,000 kg F-18 lands at 52 m/s on an aircraft carrier, its tail hook snags the cable to slow it down. How far does the spring stretch while stopping the jet
Derive an expression for the surface temperature of the Sun, in terms only of its solid angle, its flux per unit wavelength f(lambda1) at Earth at one wavelength (lambda 1) and its fundamental constants
A dart is thrown horizontally with an initial speed of 12 m/s toward point P, the bull's-eye on a dart board. How far away from the dart board is the dart released
A 2.1-m-tall, 90-cm-diameter concrete column supports a 4.0×10^5kg load. By how much is the column compressed
A hydrogen atom has an ionization energy of 13.6 ev. An electron in the n = 4 state makes a transition to the n = 2 state. What is the wavelength of the emitted photon?
A 1400kg wrecking ball hangs from a 20m -long cable. By how much has the gravitational potential energy of the ball changed
At one point in a pipeline, the water's speed is 3 m/s and the gauge pressure is 4.00×10^4 Pa. Find the gauge pressure at a second point in the line 11 m lower than the first if the pipe diameter at the second point is twice that at the first.
Suppose that earth was formed as molten rock at some very high temperatures. Estimate the time for the earth to cool to 300 K.
A roof tile falls from rest from the top of a building. How far abovethe top of this window is the roof
It takes the elevator in a skyscraper 4.1s to reach its cruising speed of 13m/s. A 68kg passenger gets aboard on the ground floor. find the passenger's weight before the elevator starts moving
If the atom could be enlarged to the size of a football field, and the electrons were represented by gnats, how large would the nucleus be
One mole of an ideal diatomic gas is heated from a temperature of 22 degrees C to a temperature of 95 degrees C. How much heat in joules must be supplied if the volume is kept constant during heating?
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