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A paper filled parallel plate capacitor (k=3.30) has an area of 0.150m^2, and the plate seperation is set at 1.00 μm. This capacitor is hooked up to a 12.0V battery in order to store energy in the device. The paper is then removed and the plate separation is doubled while the battery is still connected. Calculate the magnitude of the change in energy stored in the capacitor, and say whether the energy change is an increase or decrease.
When a potential difference of 166 V is applied to the plates of a parallel-plate capacitor, the plates carry a surface charge density of 32.0 nC/cm2. What is the spacing between plates.
A 70 g bullet traveling at 250 m/s penetrates a block of ice at 0°C and comes to rest within the ice. Assuming that the temperature of the bullet does not change appreciably, how much ice is melted as a result of the collision?
Whenever two Apollo astronauts were on the surface of the Moon, a third astronaut orbited the Moon. Determine the astronaut's orbital speed
The angle of refraction of a ray of light traveling through a piece of fused glass quartz is 29°. Find the angle of incidence
As a part of a New Year's celebration, a boy is needed to cause a wheel adorned with sparklers to spin rapidly. To accomplish this, the boy wound a 6 m long rope around the 13 cm diameter axle of the wheel.
An object at rest explodes into three pieces of equal masses. One moves east at 23 m/s, while the second piece moves northwest at 14 m/s. Estimate the velocity of the third piece? Suppose each piece has a mass of 2 kg.
Coherent light with wavelength 610 passes through two very narrow slits, and the interference pattern is observed on a screen a distance of 3 from the slits. The first-order bright fringe is a distance of 4.84 from the center of the central bright..
A 25.0g sample of copper at 363 K is placed in 100g of water at 293 K. Calculate final temperature of the water
Two thermally insulated reservoirs each contain 2 kg of water at temperatures of 80 °C and 20 °C respectively, Determine the find equilibrium temperature and find the change in entropy of the local universe in the mixing process
A water heater can generate 8500 kcal/h. How much water can it heat from 15°C to 50°C in one hour
a dog in an open field runs 10.0m east and then 27.0m in a direction 55.0 degrees west of north. please show steps in
An elevator has a mass of1170 kg and carries a maximum load of 786 kg. A constant frictionalforce of 4260 N retards its motion upward. Theacceleration of gravity is 9.8 m/s2 .
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