An ideal gas in a sealed container has an initial volume of 2.70 l. at constant pressure, it is cooled to 17.00 ∘c, where its final volume is 1.75 l. what was the initial temperature?

What properties of a moving object are used in determining the object's energy of motion

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".

How can waves travel through ground?