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Determine the value of g at the bottom of an ocean 7km deep Given that radius of earth is 6370 km and g =

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At what height above the surface of the earth value of acceleration due to gravity is reduced to one fourth of its value on the surface of the

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In the following stress – strain curve, which has:-1) Greater young’s Modulus 2) More Ductility 3) More Tensile

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A cube is subject to a pressure of `5xx10^5 N|m^2`. Each side of cube is shortened by 1% find: - 1) the volumetric strain 2) the bulk modulus of elasticity of

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The Young’s modulus of steel is `2.0xx10^(+11) w`/`m^2`. If the interatomic spacing for the metal is `2.8xx10^(-10)m`, find the increase in the interatomic spacing for a force of `10^9 N`|`m^2` and the force

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Hydrostatic pressure is a scalar quantity even though pressure is force divided by area, and force is a vector.

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Calculate the radius of new bubble formed when two bubbles of radius `r_1 and r_2`

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A liquid drop of diameter 4 mm breaks into 1000 droplets of equal size. Calculate the resultant change in the surface energy. Surface tension of the liquid is 0.07

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Why should detergents have small angles of

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Show that if two soap bubbles of radii a and b coalesce to from a single bubble of radius c. If the external pressure is P, show that the surface tension T of soap solution is

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Water flows through a horizontal pipe of which the cross – section is not constant. The pressure is 1cm of mercury where the velocity is 0.35m/s. Find the pressure at a point where the velocity is

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A horizontal pipe of diameter 20 cm has a constriction of diameter 4 cm. The velocity of water in the pipe is 2m/s and pressure is `10 N`/`m^2`. Calculate the velocity and pressure at the

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The reading of a pressure metre attached to a closed is `2.5 × 10^5 N`/`m^2`. On opening the valve of pipe, the reading of the pressure metre reduces to `2.0 × 10^5 N`/`m^2`. Calculate the speed of water flowing through the

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Why is latent heat of vaporization of a material greater than that of latent heat of

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A gas mixture consists of 2 moles of oxygen and 4 moles of argon at temperature T. If we neglect all vibration modes, find the total energy of the

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What are thermal radiation? Write its properties of thermal

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Does the working of an electric refrigerator defy second law of

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How does second law of thermodynamics explain expansion of

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Calculate difference in efficiency of a Carnot energy working between:-1) 400K and 350K2) 350K and

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What happens when an electric fan is switched on in a closed

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