What is Luis' displacement? (do not include the label "m" in your answer) * As shown in the figure below. Luis walks 40 m toward his truck. He notices he forgot his keys, so he
returns back to his house. His total travel time is 95 s.
40 m
40 m

Rohit is trying to tune an instrument

The amount of potential energy possessed by an elevated object is equal to what?

Awelder using a tank of volume 7.50×10^-2 m^3 fills it with oxygen (with a molar mass of 32.0 g/mol ) at a gauge pressure of 3.30×10^5 pa and temperature of 37.1 ∘c. the tank has a small leak, and in time some of the oxygen leaks out. on a day when the temperature is 23.1 ∘c, the gauge pressure of the oxygen in the tank is 2.00×10^5 pa . a) find the initial mass of oxygen. b) find the mass of oxygen that has leaked out.