A man carries a 10 kg ball at waist level and walks for 8 meters. How much work does the man do against gravity while walking?

In which of the following cases is work being done on an object? question 2 options: pushing against a locked door carrying a box down a corridor pulling a trailer up a hill suspending a heavy weight with a strong

Idon’t quite understand this problem

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above