Adding a catalyst to a reaction has an effect similar to a. decreasing pressure. b. increasing concentration. c. lowering the concentration. d. adding water to a reaction.

Oxygen undergoes an isentropic expansion from 120 degree c and 280 kpa absolute to 140 kpa absolute. determine the final temperature of the oxygen and the amount of work per kg of o_2 produced in the process if it is adiabatic.

Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.

The least penetrating form of radiation is