Physics, 17.10.2019 18:50 caldonia2018
An object with a height of 18cm is placed in front of a converging lens. the image height is -9.0. what is the magnification of the lease.
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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
An object with a height of 18cm is placed in front of a converging lens. the image height is -9.0. w...