If the expansion work w = -15 J, it indicates that the work is done on the surroundings.
举一反三
- If the expansion work w = -15 J, it indicates that the volume change is negative.
- DU = 100 J is for a system that gives off 100 J of heat and ( ) A: does no work B: does 200 J of work C: has 100 J of work done on it D: has 200 J of work done on it.
- The ratio of the work done by the machine _________ the work done on it is called the efficiency of the machine.
- Will you show me how ( ) A: this work is done B: is this work done
- The ratio of the work done by the machine ______ the work done on it is called efficiency of the machine. A: against B: to C: with D: for