Physics, 29.03.2021 15:00 Destinirainer
(iv) The mean energy transferred during the lightning strike is 540 x 106 J. Show that the resistance of the air is approximately 1000 omega.
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Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".
Answers: 3
(iv) The mean energy transferred during the lightning strike is 540 x 106 J.
Show that the resistan...
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