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A metallic sphere has a charge of +3.9 nC. A negatively charged rod has a charge of -6.0 nC. When the rod touches the sphere, 8.0 109 electrons are transferred. What are the charges of the sphere and the rod now?
The index of refraction for violet light in plastic is greater than that for red light by 0.0410. Delaying any rounding off of calculations until the very end, find the index of refraction for violet light in plastic.
Jet fighter planes are launched from aircraft carriers with the aid of their own engines and a catapult. what is the work done on the jet by the catapult
To determine the specific heat of an object, a student heats it to 100 in boiling water. She then places the 68.5 object in a 196 aluminum calorimeter containing 135 of water. what is the specific heat of the object
what time delay Delta t is necessary. A boxcar of mass 600 tons at rest becomes uncoupled on a 5.00 grade. If the track is considered to be frictionless, what speed does the boxcar have after 15 seconds.
A stargazer has an astronomical telescope with an objective whose focal length is 185 cm and an eyepiece whose focal length is 1.20 cm. what is the best angular magnification the stargazer will be able to achieve
A turntable that spins at a constant 80 rpm takes 3.70s to reach this angular speed after it is turned on. Find its angular acceleration (in rad/s^{2}), suppose it to be constant, and the number of degrees it turns through while speeding up.
A 0.50-kg croquet ball is initially at rest on the grass. When the ball is struck by a mallet, the average force exerted on it is 225 N. how long was the mallet in contact with the ball
a ball moving with speed v collides with a horizontal smooth surface at an angle ? with normal to surface. if
Two boats are heading away from shore. Boat 1 heads due north at a speed of 3.77 m/s relative to the shore. What is the speed of the passenger relative to the shore
A 150 g Copper bowl contains 220 g of water, at an initial temperature T1. A 300 g Copper cylinder at 7000 C is dropped into the water, How much energy is transferred to the bowl
A fire hose must be able to shoot a stream of water a specified height, straight up. Calculate the gauge pressure (difference between actual pressure
A 2.6-kg cart is rolling along a frictionless, horizontal track towards a 1.7-kg cart that is held initially at rest. What is the total momentum of the system of the two carts
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