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Two 2.3-cm-diameter-disks spaced 1.8 mm apart form a parallel-plate capacitor. The electric field between the disks is 4.6×105V/m.
a. What is the voltage across the capacitor? (Express your answer with the appropriate units.)
b. How much charge is on each disk? (Enter your answers numerically separated by a comma.)
c. An electron is launched from the negative plate. It strikes the positive plate at a speed of 2.2×107m/s. What was the electron's speed as it left the negative plate?
(Express your answer with the appropriate units.)
7.85 g of nitrogen gas at an initial pressure of 3.87 atm and at 16°C undergo an isobaric expansion until the volume has doubled. What is the gas volume after the expansion
A rocket moves straight upward ,starting from rest with an acceleration of +29.4 m/s2. it runs out of fuel at the end of 10.00 seconds, find the maximum height the reaches
Two trains are traveling toward each other at 31.0 m/s relative to the ground. One train isblowing a whistle at 1230 Hz. What frequency will be heard on the other train in still air
A man stands on a frictionless platform that is rotating with an angular speed of 3.3 rad/s; his arms are outstretched and he holds a weight in each hand. find the change of the kinetic energy when the man moves his arms
What is the speed of the two carts at the moment while their speeds are equal?
Find out the intensity if the frequency is increased to 2.90 kHz while constant displacement amplitude is maintained.
A student pulls a box of books on a smooth horizontal floor with a force of 100 N in a direction of 37.0o above the horizontal. If the mass of the box and the books is 40.0 kg, what is the normal force on the box?
A bullet is fired through a board 8.0 cm thick in such a way that the bullet's line of motion is perpendicular to the face of the board. Find the total time the bullet is in contact with the board
A student throws a water balloon vertically downward from the top of a building, What is the magnitude of its velocity after falling 10.1m and What is its speed after falling for 2.20s
The pilot of an aircraft wishes to fly due west in a 30.8 km/h wind blowing toward the south. In what direction should the aircraft head
If none of this heat were lost to the surroundings. The bicycle rider generated 300 J of heat each second. If all this energy is removed from his body by sweating, how much water would he lose each hour by sweating?
A sled is initially given a shove up a frictionless 25 degree incline. It reaches a maximum vertical height 1.35 m higher than where it started. What was its initial speed
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