Physics, 29.01.2020 23:48 vincentmoine
Electrons are continuously being knocked out of air molecules by cosmic ray particles from space. once the electrons are free, they experience an electric force, f, caused by an electric field, e, that’s in the atmosphere due to charged particles that are already on earth. if the electric field near earth is 150 n/c and directed downward, what is change in potential energy, δu, when the force causes the electron to move upward through a distance of d=520 m? through what potential difference does the electron move?
Answers: 3
Physics, 22.06.2019 08:40
Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?
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Physics, 22.06.2019 15:50
The california mussel (mytilus californianus) attaches itself to a rock or other solid surface with a bundle of filaments known as the byssus. imagine that 15.0 j of work is done to stretch the distal end of the byssus. it releases 10.8 j of thermal energy as it relaxes. what is the resilience of the distal end of the byssus?
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Physics, 22.06.2019 21:10
Which radioisotope is used in dating geological formations?
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Physics, 22.06.2019 21:30
The diagram shows a boulder rolling down a hill into a valley and then up the opposite hill. at which position does the boulder have the greatest kinetic energy? ab c d
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Electrons are continuously being knocked out of air molecules by cosmic ray particles from space. on...
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