Power and work done
Cards (24)
- How many definitions of power are there?
- What is the first definition of power?
- What is the equation for power based on energy transferred?
- What is the second definition of power?
- What is the equation for power based on work done?
- What does "work done" refer to?
- If you push a car down the road, what is the energy referred to as?
- How is electrical energy transferred from a plug socket to a phone referred to?
- In what units is power measured?
- In what units is energy transferred measured?
- In what units is time measured?
- How do you compare the power of two lamps?
- How do you calculate the power of the left lamp that transfers 1200 joules over 20 seconds?
- How do you calculate the power of the right lamp that uses 1500 joules over 30 seconds?
- What does a lamp label indicate?
- If an 1100 watt microwave is on for three minutes, how do you find the energy transferred?
- How do you convert three minutes to seconds?
- What is the energy transferred by the microwave?
- How do you convert joules to kilojoules?
- What is the energy transferred by the microwave in kilojoules?
- If you do nine kilojoules of work over 20 seconds, how do you find the power used?
- What is the power used to push the car?
- What are the key equations for calculating power?
- What are the units for power, energy transferred, and time?