A(n) ? can be used to represent the direction and strength of a force

Agas expands from an initial volume of 0.040 m^3 and an initial pressure of 210 kpa to a final volume of 0.065 m^3 while its temperature is kept constant. how much work is done by the system?

At what time will the interfering waves have an amplitudeof zero?

How does the formation of intrusive and extrusive igneous rocks differ?