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Card 26
Front
How can a Thermogram be used to show energy wastage?
Back
Card 27
Front
How is energy usage of a device shown?
Back
Card 28
Front
What is the equation for a device's efficiency?
Back
Card 29
Front
A kettle is supplied with 180 000 J of electrical energy. 9000 J is wasted by heating surrounding air. What is the kettles efficiency
Back
Card 30
Front
A light bulb has an efficiency of 5%. If 1000 J of useful light energy is given out, how much energy is wasted?
Back
Card 31
Front
If a device has efficiency higher than 50%, which arrow on a Sankey diagram will be thickest?
Back
Card 32
Front
List four measurable properties of a wave
Back
Card 33
Front
Define Amplitude
Back
Card 34
Front
Define Frequency
Back
Card 35
Front
Define Wavelength
Back
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