Thermal Propert...

A wire suspended vertically from one of its ends is stretched by attaching a weight of 200 N to the lower end. The weight stretches the wire by 1 mm. Then elastic energy stored in the wire is

When a body falls in air, the resistance of air depends to a greater extent on the shape of the body. Three different shapes are given Fig. Identify the combination of air resistances which truely represents the physical situation. (The cross-sectional areas are the same).

A bird is sitting in a large closed cage which is placed on a spring balance. It records a weight of 5 N. The bird of mass 0.5 kg flies upward in the cage with an acceleration of 2m/s² . The spring balance will now record a weight of

A steel ball of mass 0.1 kg falls freely from a height of 10 m and bounces to a height of 5.4 m from the ground. If the dissipated energy in this process is absorbed by the ball, the rise in its temperature is (Specific heat of steel = 460 J kg^–1 C^–1\'g = 10 ms^2–)

Water falls from a height 500 m. What is the rise in temperature of water at bottom if whole energy remains in the water?

A faulty thermometer has its lower fixed point marked as –10°C and upper fixed point marked as 110°. If the temperature of the body shown in this scale is 62°, the temperature shown on the Celsius scale is

On the celsius scale the absolute zero of temperature is at

Oxygen boils at –183°C. This temperature is approximately

Recently, the phenomenon of superconductivity has been observed at 95 K. This temperature is nearly equal to

The temperature of a substance increases by 27°C. On the Kelvin scale this increase is equal to