8 Energy – forces doing work

A conservator compares two dehumidifiers used in a storage room.

Dehumidifier	Energy transferred	Time
A	$J72\,000\ \mathrm{J}$	$minutes2.0\ \mathrm{minutes}$
B	500 J	1.0 s

Which dehumidifier is more powerful?

Show your calculations.

[3]

A conservator compares two dehumidifiers used in a storage room.

Dehumidifier	Energy transferred	Time
A	$J72\,000\ \mathrm{J}$	$minutes2.0\ \mathrm{minutes}$
B	500 J	1.0 s

Which dehumidifier is more powerful?

Show your calculations.

[3]

8 Energy – forces doing work Questions