Physics, 08.02.2021 15:00 leroybennett06
A ball has a mass of 140g if it thrown with a velocity of 450m/s what is its kenetic energy?
Answers: 1
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Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost
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Physics, 22.06.2019 17:30
Does heating a metal wire increase or decrease its electrical resistance? why?
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Physics, 22.06.2019 21:40
Engines for propeller-driven aircraft are limited in their maximum rotational speed by the fact that the tip speed of the propeller must not approach the speed of sound in air (mach i). taking 6 ft as a typical diameter for a propeller of a light airplane and 1100 fils as the speed of sound, find the upper limit on the rpm (revolutions per minute) of the propeller shaft.
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The illuminance of a surface varies inversely with the square of its distance from the light source. if the illuminance of a surface is 120 lumens per square meter when its distance from a certain light source is 6 meters, by how many meters should the distance of the surface from the source be increased to reduce its illuminance to 30 lumens per square meter?
Answers: 3
A ball has a mass of 140g if it thrown with a velocity of 450m/s what is its kenetic energy?...
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