The molecules of Nitrogen (N2) and Oxygen (O2) are moving at 0°C and 1 atmospheric pressure in a vessel. Calculate:

(i) The density of the molecule of Nitrogen (N2);

(ii) The density of the molecule of Oxygen (O2);

Atank has a shape of a cone with a radius at the top of 2 m and a height of 5 m. the tank also has a 1 m spout at the top of the tank. the tank is filled with water up to a height of 2 m. find the work needed to pump all the water out the top of the spout. (use 9.8 m/s2 for g and the fact that the density of water is 1000 kg/m3.)

In a system with only a single force acting upon a body, what is the relationship between the change in kinetic energy and the work done by the force? answers: work is equal to the change in kinetic energy.work depends on the square of the change in potential energy.work is equal to the negative of the change in kinetic energy.work is equal to the square of the change in kinetic energy

Failure to accomplish erikson’s psychosocial task of late adulthood leads to despair. a. true b. false