Physics
If there is a circular hole in a metal plate, what happens to the radius of the hole when the plate is heated?

Increases
Depends upon the metal
Unchanged
Decreases

ANSWER DOWNLOAD EXAMIANS APP

Physics
Skating on ice is possible because

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

ANSWER DOWNLOAD EXAMIANS APP