Physics, 25.02.2022 22:10 hillarytrinh
Find the phase and the missing properties of p, t, v, u, and x for water at1. 500 kpa, 100°c2. 5000 kpa, h = 1800 kj/kg3. 5000 kpa, u = 2950 kj/kg4. −6°c, v = 1 m3/kg.
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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".
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Aball thrown by ginger is moving upward through the air. diagram a shows a box with a downward arrow. diagram b shows a box with an upward arrow. diagram c shows a box with a downward and upward arrow equal in size. diagram d shows a box with a downward and upward arrow with the downward arrow larger in size. which force diagram represents the forces on the ball? you may neglect the effects of air resistance.
Answers: 3
Find the phase and the missing properties of p, t, v, u, and x for water at1. 500 kpa, 100°c2. 5000...
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