8 Energy – forces doing work

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Question 74

F

A motor receives 2.0 kJ of energy while lifting a 5.0 kg load through a vertical height of 12 m. Gravitational field strength is 10 N/kg. What is the efficiency of the motor?

[1]

$30%30\%$

$83%83\%$

$70%70\%$

$3.0%3.0\%$

8 Energy – forces doing work

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Question 74

F

A motor receives 2.0 kJ of energy while lifting a 5.0 kg load through a vertical height of 12 m. Gravitational field strength is 10 N/kg. What is the efficiency of the motor?

[1]

$30%30\%$

$83%83\%$

$70%70\%$

$3.0%3.0\%$

8 Energy – forces doing work

Question 74

Markscheme

8 Energy – forces doing work

Question 74

Markscheme

8 Energy – forces doing work

Question 74

8 Energy – forces doing work Questions

8 Energy – forces doing work

Question 74

8 Energy – forces doing work Questions