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Physics
Test

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1) What are the cars and lorries acceleration?

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2) A car is moving along at a constant speed of 20m/s. the car produces a driving force of 5000N.
a) What is the value of the resistive force?

The car increases the driving force to 7000N

b) What is the resultant force (assuming the resistive force does not change)…

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8) The heater of a toilet hand drier uses 9amps from the 240 volt mains. What is the resistance of
the heater's element?

9) A current of 3.33mA flows through a 2.7 k resistor. Calculate the potential difference across
the resistor.

10) Calculate the reading on the meter in each…

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20) A typical lightning strike delivers a charge of 20 coulombs in 1 millisecond. Calculate the average
current during the strike.

21) A rechargeable cell is designed to be charged at 120mA for 16 hours. Calculate the total charge
delivered to the cell in that time.

22) In 50 seconds,…

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