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An electron is 0.030 m from a proton and has velocity 10 m/s towards the proton. What is the speed of the electron when it "falls" to within 0.025 m of the proton?
Does the change in speed of the downward-moving rock agree with the magnitude of the speed change of the rock moving upward between the same elevations? Explain physically why it does or does not agree.
Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. What is the speed of a satellite in a geosynchronous orbit
A long, narrow rectangular loop of wire is moving toward the bottom of page with a speed of 0.025 m/s. The loop is leaving a region in which a 2.1 T magnetic field exists; magnetic field outside this region is zero. All through the time of 1.0 s, wha..
You are working out on a rowing machine. Each time you pull the rowing bar (which simulates the oars) toward you, find the magnitude of the force that you exert on the handle
Two cars are travelling on a desert road. After 5s, they are side by side at the next telephone pole. The distance between the poles is 70m.
what advantage might there be in using two identical capacitors in parallel connected in series with another parallelpair, rather than using a single capacitor.
The maximum speed of a 3.1kg mass attached to a string is 0.68 m/s and the maximum force exerted on the mass is 11N. What is amplitude of motion for the mass? What is the force constant on the string? What the frequency.
A 3.18-nF parallel-plate capacitor is charged to an initial potential difference ?Vi = 100 V and is then isolated. How much work is required to withdraw the porcelain sheet
An MP3 player operates with a voltage of 3.7 V, and is using 0.28 W of power. Find the current being supplied by the player's battery
A proton has a speed of 0.85c. FIRST Calculate the rest energy of the proton, Calculate the kinetic energy of the proton
The intensity (in W/m2) of one sound is 7.12 times as great as the intensity of another sound. Relative to the quieter sound
Bicyclists in the Tour de France reach speeds of 34.0 miles per hour (mi/h) on flat sections of the road. What is this speed in meters per second
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