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Question
Electric charge on the earth's surface and in the earth's atmosphere produces an electric field that on a clear day is directed vertically downward and has a magnitude of about 100 N/C just above the earth's surface. Extremely small negative particles can be supported by the field. For large particles, the charge that must be carried may be so great that the field around the charge causes the surrounding air to conduct the charge away. This occurs at field of about 3.0 * 10^6 N/C in dry air. Find the radius of the largest water drop that could be supported in the earth's electrostatic field. Believe that the drop is spherical. Find out the radius.
Two identical, small insulating balls are suspended by separate 0.31m threads that are attached to a commone point on the ceiling. estimate the Charge on each ball
An ambulance driver traveling at 33.0 m/s honks his horn as he sees a motorist ahead on the highway, Calculate the proper frequency of the ambulance's horn
A gymnast with mass m1 = 43 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 108 kg and length L = 5 m. Each support is 1/3 of the way from each end. at first the gymnast stands at the left end of..
What minimum heat is needed to bring 138g water at 22°C to the boiling point and completely boil it away.
An astronaut who is repairing the outside of her spaceship accidently pushes away a 90.5-cm-long steel rod, What is the magnitude of the EMF, in millivolts, induced between the ends of the rod
A fish takes the bait and pulls on the line with a force of 2.3N . The fishing reel, which rotates without friction, is a uniform cylinder of radius 0.060m and mass 0.86kg, What is the angular acceleration of the fishing reel
If a technician strikes this blade with a mallet 1.15m from the center with a 40.0N force perpendicular to the blade, find the maximum angular acceleration the blade could achieve
A 0.07-kg lead bullet traveling 296 m/s strikes an armor plate and comes to a stop. If all of the bullet's energy is converted to heat that it alone absorbs
Assuming that the Earth is spherical and recalling that latitudes range from 0° at the Equator to 90° N at the North Pole, how far apart, measured on the Earth's surface
A uniform ladder of mass m and length l leans at an angle θ against a frictionless wall, determine a formula for the minimum angle at which the ladder will not slip
Two masses of 4.00 kg each, connected by a string, slide down a ramp making an angle of 45° with the horizontal. The coefficient of kinetic friction between m1 and the ramp is 0.33. The coefficient of kinetic friction between m2 and the ramp is 0...
An 85 kg spacewalking astronaut pushes off a 655 kg satellite, exerting a 115N force for the 0.600 s it takes him to straighten his arms.
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