Ice skating can be used to demonstrate that when ice is under pressure, its
Melting point is lowered
Melting point is raised
Melting point remains unchanged
Coefficient of friction with metal is reduced
Ice skating can be used to demonstrate that when ice is under pressure, its
Names of instruments | The quantities they measure |
---|---|
A. Anemometer | 1. Speed of rotation |
B. Ammeter | 2. High temperatures |
C. Tachometer | 3. Wind speed |
D. Pyrometer | 4. Electric current |
5. Pressure difference |