Advertisements
Advertisements
Question
Define calorie. How many joules make one calorie?
Advertisements
Solution
One Calorie: One calorie is the amount of heat energy required to raise the temperature of one gram of water through 1°C.
There are 4.2 J in one calorie
1 Cal = 4.2 J
APPEARS IN
RELATED QUESTIONS
Name two scales of temperature. How are they interrelated?
A deep pond of water has its top layer frozen during winter. State the expected temperature of water layer (i) Just in contact with ice and (ii) At the bottom of pond.
What do you mean by heat?
What do you mean by temperature?
Name the substance which contracts when heated from 00C to 40C.
Out of metals, liquids, and gases:
Which one is worst conductor of heat?
The hotness of the object is determined by its ______.
Assertion (A): 0 °C = 273.16 K. For our convenience we take it as 273 K after rounding off the decimal.
Reason (R): To convert a temperature on the Celsius scale we have to add 273 to the given temperature.
The coldest temperature in the world was measured in the ______ continent.
Give reasons why –
chimneys are located high up in kitchens and factories
