Agatha has 1kg samples of two substance- A and B. Substance A has a higher specific heat capacity than substance B. Both samples cool down by 10C. Which will release more heat - A or B

Substance A will release more heat.

Explanation:

Let suppose that both substances experiment an entirely sensible heat process and are incompressible and begin at the same temperature. Physically speaking, specific heat (), measured in kilojoules per kilogram-degree Celsius, can be described by following expression:  

(1)

Where:

- Released heat, measured in kilojoules.

- Sample mass, measured in kilograms.

, - Initial and final temperatures of the sample, measured in degrees Celsius.

If we know that , , and , then we have the following inequation:

Substance A will release more heat.

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle