Physics
One end of a steel girder in a bridge is not fixed, but is kept on rollers. Give the reason.
Related Questions
Convert -40°F to the Celsius scale.
Read the clues across and clues downwards and fill up the blank squares.
Across :
- Transfer of heat is always vertically upwards in …………… .
- The S.I. unit of heat …………… .
- We get heat from the sun by …………… .
- Liquids when heated …………… more than solids.
- …………… are bad conductors of heat.
Down :
- A thermometer is used to measure …………… .
- …………… is a form of energy which we can feel.
Why are quilts filled with fluffy cotton?
Why is the freezing chest in a refrigerator fitted near its top?