Help 1 mole of chlorine behaving as an ideal gas in an isobaric process has an initial volume of 15 L, at a final temperature 300.15 K and an initial of 298.15 K, and a pressure of 0.98 atm, it underwent a change of W and the gas passed to a final volume of 25 L.

Calculate W, Q, and ΔU.

Which car has the most kinetic energy? a. a car of mass 1000 kg with a speed of 3 m/s b. a car of mass 2000 kg with speed 7 m/s c. a car of mass 1000 kg with speed 7 m/s d. a car of mass 2000 kg with speed 3 m/s

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?