Which of the following correctly describes the first animals that appeared? a.) these were large creatures, similar to dinosaurs b.) these were bony creatures that lived only in wet environments c.) these were soft and boneless creatures d.) these were large creatures that lived only in dry environments

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?

First answer marked as brainiest which is the correct equation describing the first law of thermodynamics? a) when the internal energy of a system changes, it equals the amount of heat added plus the work done. b) when work is done by the piston, it is equal to the heat added plus the change in internal energy of the system. c) when heat is added to the system, it is equal to the amount of work done by the piston plus the change in internal energy of the system.

Derive the formula 2as=v² -u² where the formula have have usual meanings