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How far away from the surface of earth does the value of g is reduced to 4% of its value on the surface of the earth Given radius of earth =

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Obtain on expression showing variation of acceleration due to gravity with

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Explain :- 1) Elastic Body 2) Plastic Body 3)

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Why is the force of repulsion responsible for the formation of a solid and not the forces of

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A bar of cross section A is subjected to equal and opposite tensile force F at its ends. If there is a plane through the bar making an angle Q, with the plane at right angles to the bar in the figure a) Find the tensile stress at this plane in terms of F, A and Qb) What is the shearing stress at the plane in terms of F, and Q.c) For what value of Q is tensile stress a

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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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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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

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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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

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Two capillary tubes of length 15 cm and 5 cm and radii 0.06 cm and 0.02 cm respectively are connected in series. If the pressure difference a cross the end faces is equal to the pressure of 15 cm high water column, then find the pressure difference across the : → 1) first tube 2) Second

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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A metallic sphere of radius `1 × 10^(-3) m` and density `1 × 10^4 kg` | `m^3` enters a tank of water after a free fall through a high ‘h’ in earth’s gravitational field. If its velocity remains unchanged after entering water, determine the value of h. Given :-Co-efficient of viscosity of water `= 1 × 10^(-3) Ns` | `m^2; g = 10 m` | `s^2`; density of water `= 1 × 10^3 kg `|

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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What is terminal velocity and derive an expression for

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What is equation of continuity? Water plows through a horizontal pipe of radius, 1cm at a speed of 2m/s. What should be the diameter of nozzle if water is to come out at a speed of

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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In a horizontal pipeline of uniform area of cross – section, the pressure falls by `5 N`/`m^2` between two points separated by a distance of 1 Km. What is the change in kinetic energy per Kg of oil flowing at these points? Given Density of oil = 800

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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1) Water flows steadily along a horizontal pipe at a rate of `8 × 10^(-3)m^3`/s. If the area of cross – section of the pipe is `40 × 10^(-4) m^2`, Calculate the flow velocity of water.2) Find the total pressure in the pipe if the static pressure in the horizontal pipe is `3 × 10^4 Pa`. Density of water is `1000 Kg`/`m^3`.3. What is the net flow velocity if the total pressure is `3.6 × 10^4

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Calculate Cp for air, given that `Cv =0.162 cal g^(-1) k^(-1)` and density air at N.T. P is `0.001293

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Develop a relation between the co-efficient of linear expansion, co-efficient superficial expansion and coefficient of cubical expansion of a

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Calculate the amount of heat required to convert 1.00kg of ice at – 100c into steam at 1000c at normal pressure. Specific heat of ice = 2100J|kg|k. Latent heat of fusion of ice `= 3.36xx10^5J|kg`, specific heat of water = 4200J|kg|k. Latent heat of vaporization of water =

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Calculate the amount of heat necessary to raise the temperature of 2 moles of HEgas from `20^oC` to `50^oC` using:-1) Constant – Volume Process 2) Constant Pressure Process Here for, He; `CV = 1.5 R and CP =

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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If half mole of helium is contained in a container at S. T. P. How much heat energy is needed to double the pressure of the gas, keeping the volume of the gas constant? Given specific heat of gas `= 3J | g

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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