(b)
The diagram shows the energy transformations produced by a TV.
(1)
Which are the useful energy outputs?
(1)
(ii)
Use the information in the diagram to calculate the efficiency of the TV.
Write down the equation you use, and then show clearly how you work out
your answer.
iii) what eventually happenes to the useful energy transferred by the tv?
Answers: 1
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In a set amount of time, a battery supplies 25j of energy to an electric circuit that includes two different loads. one of the loads produces 10 j of heat energy during this time interval. how much heat energy is produced by the second load in this time? explain your answer
Answers: 3
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The experiment done in lab is repeated, using a ball that has unknown mass m. you plot your data in the form of f 2 versus m/l, with f in rev/s, m in kg, and l in m. your data falls close to a straight line that has slope 3.19 m/(kg ยท s2). use g = 9.80 m/s2 and calculate the mass m of the ball.
Answers: 1
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Humidity is to blame for that muggy, steamy feeling you experience on some hot summer days. what gas in the atmosphere causes humidity? a) oxygen b) hydrogen c) nitrogen d) water vapor
Answers: 1
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If jason ii needs 15 kw of power at 300 volts to operate, what amperage of current must flow through the cable?
Answers: 2
(b)
The diagram shows the energy transformations produced by a TV.
(1)
Which are...
(1)
Which are...
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