An electric field is given by E = sign(x) (300 N/C)i where sign(x) = -1 if a <0 and sign(x) = +1 if x> 0. A cylinder of length 20 cm and radius 4.0 cm has its center at the origin and its axis along the x-axis such that one end is at a = +10 cm and the other is at x = -10 cm. What is the net charge inside the cylinder? A. 2.7 x 1011 C B. 2.7 x 10-7 C C. 9.3 x 10 11 C D. 1.3 x 10 9 C

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How much work is done lifting a 25 pound objectfrom the ground to the top of a 55 foot butlding the eable used weighs 0.5 pounds per foot? foot pounds. Question Help: OVideo Submit Question

Please help me this question! I already know that the answer is option E but I don't know how to get that answer. Please include full work for this question!

Please answer question 12 and provide all work needed.

you become angry with physics and throw your 1kg book across the room. If the speed of the book after it leaves your hand is 30 m/s, how much work did you do on the book? Assume the height of the book doesnt change.