Work. Energy If an electron (mass m= 9.11 x 10 kg) in copper near the lowest possible temperature has a kinetic energy of 6.7x10 19 J, what is the speed of the electron?

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A: In this question answer is given below. It is helpful for you ?

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Q: Pls help ASAP. Pls show all work and calculations and include units for final answers.

A: Hey dear this question is related with equilibrium of forces along x and y directions. Have a look

Proper Length

The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.