Advertisements
Advertisements
Question
We use the straw to suck soft drinks, why?
Advertisements
Solution
When we suck through the straw, the pressure inside the straw becomes less than the atmospheric pressure. Due to the pressure difference, the soft drink rises in the straw and we are able to take the soft drink easily.
APPEARS IN
RELATED QUESTIONS
Two wires are made of the same material and have the same volume. The area of cross-sections of the first and the second wires are A and 2A respectively. If the length of the first wire is increased by ∆l on applying a force F, how much force is needed to stretch the second wire by the same amount?
The Young’s modulus for a perfect rigid body is __________.
Which of the following is not a scalar?
If the temperature of the wire is increased, then Young’s modulus will __________.
Copper of fixed volume V is drawn into a wire of length l. When this wire is subjected to a constant force F, the extension produced in the wire is ∆l. If Y represents Young’s modulus, then which of the following graphs is a straight line?
Which one of these is more elastic, steel or rubber? Why?
A spring balance shows wrong readings after using it for a long time. Why?
Write down the expression for the elastic potential energy of a stretched wire.
Explain the different types of modulus of elasticity.
Why the passengers are advised to remove the ink from their pens while going up in an aeroplane?
