Question

9. What is mass of a piece of steel if after being heated with 2500J its temperature increased by 4oC? 9a. A 3 kg of some metal is heated with 801J. Its temperature increased by 0.3oC. What material is it?

Answer 1

We are given the following information

Energy = 2500J

Change in temperature = 40 °C

We are asked to find the mass of steel.

The mass of the steel can be found using the equation below

`Q=m\cdot c\cdot\Delta T`

Where c is the specific heat of the steel that is 420 J/(kg°C)

Re-arranging the equation for m and substituting the given values