D: 10000 W
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A rocket of total mass M is travelling at a speed v. The engine of the rocket is fired and fuel is used up. The mass …
A builder lifts eight slabs from the ground on to the back of a lorry 1.5 m high. The total time taken is 48 s and ea…
A child slides down a slide. The weight of the child is 250 N. The height of the slide is 7.0 m. The work done agains…
As a magnet is moved into the coil of wire as shown, there is a small reading on the sensitive ammeter. Which change …
An ideal transformer has a primary voltage of 600 V and a secondary voltage of 240 V. The secondary coil is attached …
A resistor is marked with three coloured bands. Using the key provided, what is the resistance of the resistor?