What is the phase difference between the current in an ac circuit and the potential difference across the source if the time difference between the peaks of the current and potential difference across the source is 0.1 ms?

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.

How do you tell if someone actually cares about you? and just say they do?

An electric clothes dryer has a resistance of 8 ohms. it draws 30 a of current. what is the voltage, in volts, of the wall outlet that it is plugged into?