Vector V⃗ 1 is 6.8 units long and points along the negative x axis. Vector V⃗ 2 is 8.2 units long and points at 55 ∘ to the positive x axis. What are the x and y components of vector V⃗1? What are the x and y components of vector V⃗2? Determine the magnitude of the sum V⃗1+V⃗ 2. Determine the angle of the sum V⃗1+V⃗2.

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.