The power source provides a current of 1.86 A at a potential difference of 3.90 V. Calculate the power of the power source. Use the equation: power = potential difference × current

Choose the correct unit from the box below

C W J

W

Explanation:

The unit for Power which is  (Volt X Current) is Watts. and the symbol for Watts is W.

total distance travelled = 60 miles

total time taken =1.5 hours

average speed = total distance / total time

60 / 1.5

= 40

therefore, average speed = 40 m/h

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force is mass*acceleration.

we have a very small mass: 11.4*0.001 kg

if we want 0.035n of force, we need an acceleration:

0.035 = 11.4*0.001*a

a = 0.035/(11.4*0.001) m/s^2