A hole is made in a metal plate. When the metal is raised to a higher temperature, what happens to the diameter of the hole?

A cylindrical steel plug is inserted into a circular hole of diameter 2.60 cm in a brass plate. When the plug and the plates are at a temperature of 20^(@)C, the diameter of the plug is 0.010 cm smaller than that of the hole. The temperature at which the plug will just fit in it is ("Given",alpha_(steel)=11xx10^(-6)C^(-1)and alpha_(brass)=19xx10^(-6)C^(-1)

A table tennis ball covered with a conducting paint is suspended by a silk thread so that it hangs between tow metal plates. One plate is earthed, when the other plate is connected to a high voltage generator, what will happen to the ball.

What is ozone hole?

An iron ball has a diameter of 6 cm and is 0.010 mm too large to pass through a hole in a brass plate when the ball and plate are at a temperature of 30^@ C . At what temperature, the same for ball and plate, will the ball just pass through the hole? Take the values of (prop) from Table 20 .2 .

What happens when alkali metals are exposed to air ?

If we introduce a large thin metal plate between two point charges, what will happen to the force between the charges?

A solid metallic cone, with radius 6 cm and height 10 cm, is made of some heavy metal A. In order to reduce its weight, a conical hole is made in the cone as shown and it is completely filled with a lighter metal B. The conical hole has a diameter of 6 cm and depth 4 cm. Calculate the ratio of the volume of metal A to the volume of the metal B in the solid.

What happens when metal oxides dissolve in water?

Height of a solid cylinder is 10 cm and diameter 8 cm. Two equal conical hole have been made from its both ends. If the diameter of the holes is 6 cm and height 4 cm, find (i) volume of the cylinder, (ii) volume of one conical hole, (iii) volume of the remaining solid.

Suppose the bob in a simple pendulum is a hollow sphere with a small hole at the bottom. The sphere is filled with water and is made to oscillate. What happens to the period ?