The metric unit of a Joule (J) is a unit of potential energy work. kinetic energ

Question

The metric unit of a Joule (J) is a unit of potential energy work. kinetic energy any of the above is correct Power is the rate at which work is done the rate at which energy is expended work per unit time any of the above is correct Which of the following is a combination of units called a watt? N. m/s kg.m^2s^2/s all of the above are correct About how many watts are equivalent to 1 horse power? 75 750 7500 A kilowatt-hour is a unit of power work time electrical charge most energy comes to and leaves earth in the form of nuclear energy chemical energy radiant energy kinetic energy The most widely used source of energy today is coal petroleum nuclear moving water

Explanation / Answer

29) D (any of the above is correct)

The unit of potential energy, kinetic energy and work is joules

30) D (any of the above is correct)

definition of power is 1) work/time 2) energy/time 3) work per unit time

31) D ( all of the above are correct)

generally watt units are J/s

1 J is Nm i,e Nm/s

32) 750 Watts (iii)

33) kilo watt hour is the unit of work or energy (B)

34) radiant energy (C)

35) Coal

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