An electric drill rated 400W is used to drill a hole in copper of mass 400g in 20s. Calculate the rise in temperature if all the heat produced is absorbed by the copper. [specific heat capacity of copper = 400Jkg^-1K^-1]

Similar Questions

What happens when a, certain quantity of pure ice is completely changed to water at 0oC? ...

The symbol illustrated above is that of a resistor? ...

The basic difference between a transverse wave and a longitudinal wave travelling in the same direct...

A submarine is observed to rise from a real depth off 80 m to 60 m in water. calculate the change in...

If the stress on a wire is 107NM-2 and the wire is stretched from its original length of 10.00 cm to...

A body of mass 4.2kg moving with velocity 10ms-1 due east, hits a stationary body of mass 2.8kg. If ...

Which of the following does NOT cause a reduction of the surface tension of water? ...

A radioactive substance has a half life of 20 days. What fraction of the original radioactive nuclei...

The opposition offered to an alternating current in a C-R series circuit is known as ...

One of the following is a scalar quantity? ...