13. A 15w fluorescent light produces 1200J of light every 4.0 minutes. How efficient is this light bulb? [2 marks] 14. A

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13. A 15w fluorescent light produces 1200J of light every 4.0 minutes. How efficient is this light bulb? [2 marks] 14. A

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13 A 15w Fluorescent Light Produces 1200j Of Light Every 4 0 Minutes How Efficient Is This Light Bulb 2 Marks 14 A 1
13 A 15w Fluorescent Light Produces 1200j Of Light Every 4 0 Minutes How Efficient Is This Light Bulb 2 Marks 14 A 1 (35.29 KiB) Viewed 47 times
13. A 15w fluorescent light produces 1200J of light every 4.0 minutes. How efficient is this light bulb? [2 marks] 14. A 2000w elevator motor operates for 95s to lift a 3.0x10kg elevator car. Assuming 60% efficiency, how high would the elevator car be lifted? [2 marks]
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