Three moles of gas expand isothermally at 0 degree from initial pressure 5 atmosphere to final pressure 3 atmospheres. how much heat is absorbed

According to social exchange theory, altruistic behaviors benefit the individual who performs them.

Photons with the highest energy have the longest period

Abumper car with a mass of 250 kg is traveling at a speed of 4 m/s. this bumper car collides and sticks to a second bumper car with a mass of 250 kg, which is initially at rest. what is the final speed of these two bumper cars after the collision, assuming they remain stuck together?