Physics, 07.10.2019 19:00 jaleewoodyard1
An electron is released a short distance above earth's surface. a second electron directly below it exerts an electrostatic force on the first electron just great enough to cancel the gravitational force on it. how far below the first electron is the second? the value of coulomb's constant is 8.98755 × 109 n · m2 /c 2 and the acceleration of gravity is 9.81 m/s 2 .
Answers: 2
Physics, 21.06.2019 16:00
Answer quickly (15 points) a comet is approaching earth. describe earth’s gravitational pull as the comet gets closer to it. a. remain constant b. increase c. decrease d. reversed
Answers: 3
Physics, 21.06.2019 21:50
What is the length x of the side of the triangle below? (hint: use the cosine function)
Answers: 1
Physics, 22.06.2019 00:00
A1000-kg weather rocket is launched straight up. the rocket motor provides a constant acceleration for 16-s, then the motor stops. the rocket altitude 20-s after launch is 510-m. you can ignore any effects of air resistance. a. what was the rocket’s acceleration during the first 16-s? b. what is the rocket’s speed as it passes through a cloud 5100-m above the ground?
Answers: 1
Physics, 22.06.2019 01:50
Arod of some material 0.20 m long elongates 0.20 mm on heating from 21 to 120°c. determine the value of the linear coefficient of thermal expansion [in (degrees c)^-1] for this material.
Answers: 2
An electron is released a short distance above earth's surface. a second electron directly below it...
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