Physics, 17.12.2019 05:31, kyasnead8189
When a dam is placed in a river, water builds up on one side of the dam. an opening can be made in the dam, and a water wheel placed in that opening. as the water flows over the water wheel, energy is released that can be used to do work. the water wheel in the river is a good analogy for
Answers: 2
Physics, 22.06.2019 04:00, alexialoredo625
When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative
Answers: 2
Physics, 22.06.2019 16:40, Crxymia
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
When a dam is placed in a river, water builds up on one side of the dam. an opening can be made in t...
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