Someone plz help me, like plz

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?

Ideal meters problem. what internal resistance is ideal for a voltmeter? what internal resistance is ideal for an ammeter?

Asparrow cruising at 1.5m/s begins to accelerate at a constant .3m/s^2 for 3s. what was the change in velocity?