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A 1.7nF parallel-plate capacitor has an air gap among its plates. Its capacitance increases by 3.0nF when the gap is full by a dielectric.
What is the dielectric constant of that dielectric?
At a certain location, the horizontal component of the earth's magnetic field is 2.2 10-5 T, due north. Find the speed of the proton
A spaceship travels at a constant speed from earth to a planet orbiting another star. When the spacecraft arrives, 11 years have elapsed on earth, and 9.3 years have elapsed on board the ship. How far away (in meters) is the planet, according to obse..
for a sphere e falls off with 1r2 for an infinite line charge e falls off with 1r for an infinite sheet of charge its
A 43 power refracting telescope (wherepower is the angular magnification) has an eyepiece with a focallength of 4.2 cm. How long is the telescope
A volleyball is spiked so that its incoming velocity of +4.79 m/s is changed to an outgoing velocity of -12.0 m/s. find the magnitude of the impulse that the player applies to the ball
An object is being acted upon by three forces and moves with a constant velocity. What is the direction of the third force
An immersion heater used to boil water for a single cup of tea plugs into a 120 V outlet and is rated at 300 W. What is the Resistance of the Heater
A cannon tilted upward at 26° fires a cannonball with a speed of 105 m/s. What is the component of the cannonball's velocity parallel to the ground
Two identical pieces of rope, 10 m long, have mass per unit length, μ = 0.10 kg/m. One of the two is soaked in water and absorbs an additional 1.0 kgof mass. The two ropes are then attached together and stretched horizontally under a tension of 200 N..
An iron vat is 13 m long at room temperature
Richard is driving home to visit his parents. 140 of the trip are on the interstate highway where the speed limit is 65. How many minutes does he save
A bat hits a moving baseball. If the bat delivers a neteastward impulse of 1.3 N-s and the ball starts with an initialhorizontal velocity of 3.8 m/s to the west, what is the mass of the ball
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