Question

3. A beggar wrapped himself with a few layers of newspaper on a cold winter night.
This helped him to keep himself warm because,

a. Friction between the layers of newspaper produces heat.
b. Air trapped between the layers of newspaper is a bad conductor of heat.
c. Newspaper is a conductor of heat.
d. Newspaper is at a higher temperature then the temperature of the surroundings.

4. An iron ball at 40 degree Celsius is dropped in a mug containing water at 40 degree
Celsius. The heat will
a. Flow from iron ball to water
b. Not flow from iron ball to water or from water to iron ball
c. Flow from water to iron ball
d. Increase the temperature of both

Answer 1

Answer:

3a friction between the layers of newspaper produces heat

4a from iron ball to water

idk of its correct or not

Answer 2

Answer:

3) Air trapped between the layers of newspaper is a bad conductor of heat.

4) not flow from iron ball to water or from water to to iron ball