An upward force is applied to lift a 15 kg object to a height of 5 meters at constant speed. (Round your answer to the nearest whole number; omit
units.)
3 points

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.

Positive ions differ from neutral atoms in that

Aforce is a vector quantity because it has both?