A body radiates out 300 calories of heat energy. How much heat energy is radiated out by the body in joules?

Short/Brief Note

Heat energy radiated by the body = Q = 300 Cal
As 1 cal = 4.2 J
Q = 300 Cal = 300 × 4.2 J
Q = 1260 J

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Chapter 6: Heat and Energy - Exercise

Chapter 6 Heat and Energy
Exercise | Q 6

Fill in the blank

A person is said to have fever if his body temperature is more than _________

The temperature of a body rises by 1°C. What is the corresponding rise on the (a) Fahrenheit scale (b) Kelvin scale?

What is heat ? Write its S.I. unit.

Name two substances which expand on heating.

Fill in the blank with the correct word, from the words in option:

All the temperature on the kelvin scale are in ____ figures.

Convert the following temperature into Fahrenheit scale:
85⁰C.

Analogy

Heat : Joule :: Temperature : _____

______ determines the direction of the flow of heat.