[05.04]a mixture of two gases exerts a total pressure of 1.22 atm. if the partial pressure of one of the gases is 0.58 atm, what is the partial pressure of the other gas in the mixture? 0.48 atm 0.64 atm 0.71 atm 2.1 atm

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".