An infant's pulse rate is measured to be 127 â± 4 beats/min. what are the uncertainty and the percent uncertainty in this measurement?

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

The force it would take to accelerate an 900-kg car at the rate of 6m/s2

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.