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###### 1 (2 points) What is the mass ofthe Moon (in kg)? (Hint: 9 = 162 m/s? and the mean distance from the center of the Moon to its surface is 1.74x 108 m )(3 points) An electron moves with speed of 1.50 10" ms. (a) How much kinetic energy (in J) does the electron have? How much work (in J) is required t0 stop this clectron? The mass ofan electron is 91 10 " kg:

1 (2 points) What is the mass ofthe Moon (in kg)? (Hint: 9 = 162 m/s? and the mean distance from the center of the Moon to its surface is 1.74x 108 m ) (3 points) An electron moves with speed of 1.50 10" ms. (a) How much kinetic energy (in J) does the electron have? How much work (in J) is required t0 stop this clectron? The mass ofan electron is 91 10 " kg:

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