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3 cards from this section. Quick, good the night before a test.
What is the formula for work?
Think of how force and distance relate.
What unit is power measured in?
It’s named after a famous inventor!
What formula represents power?
Think about the definition of power.
True or False: Energy is measured in Watts.
Remember the difference between energy and power.
A worker lifts a 50 kg box to a height of 2 meters. How much work is done? (Use g = 9.81 m/s²)
Find the weight of the box first using mass and gravity.
An electric heater runs at a power of 1500 Watts for 2 hours. Calculate the total energy consumed in kWh.
Convert energy from Joules to kWh after calculation.
5 more questions in this section. Enroll free to practise them all.
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