A train on a straight track goes in the positive direction for 5.9 km, then backs up for 3.8 km. What is the distance covered by the train?

True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.

The pressure proportional to the area a- inversely b- directly c- increase d-decrease

Which of the following statements are true for an isothermal process? check all that apply. - during an isothermal process, the work done by the gas equals the heat added to the gas. - during an isothermal process, the internal energy of the system changes. - an isothermal process is carried out at constant temperature. - an isothermal process is carried out at constant pressure. - an isothermal process is carried out at constant volume.