Physics
Which of the following options correctly explains the term heat budget?

It is the balance between incoming and outgoing radiation
It is the radiation from the earth in the form of long waves.
It is a mode of transfer of heat through matter by molecular activity.
It is the amount of heat which the surface of earth receives from the sun.

ANSWER DOWNLOAD EXAMIANS APP

Physics
Skating on ice is possible because

The pressure on the ice due to skate melts the ice by lowering its melting point forming a thin film of water
Ice is cold
The surface of ice is smooth
The pressure on the ice due to skate raises its melting point

ANSWER DOWNLOAD EXAMIANS APP