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(a) Define potential energy. Give examples.(b) Draw a graph showing variation of potential energy, kinetic energy and thetotal energy of a body freely falling on earth from a height

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

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State the angle of contact and on what values do the angle of contact

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A liquid stands at the same level in the U – lube when at rest. If A is the area of cross section of tube and g is the acceleration due to gravity, what will be the difference in height of the liquid in the two limbs when the system is given acceleration

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

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What should be the pressure inside a small air bubble of 0.1mm radius situated just below the water surface? Surface tension of water =` 7.2 × 10^(-2) N`/m and atmospheric pressure = `1.013 × 10^5

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

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Why is a soap solution a better cleansing agent than ordinary

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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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What is Bernoulli’s theorem? Show that sum of pressure, potential and kinetic energy in the streamline flow is

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

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A one liter flask contains some mercury. IT is found that at different temperatures, then volume of air inside the flask remains the same. What is the volume of mercury in the flask? Given the co-efficient of linear expansion of glass `= 9 × 10^(-6) `/ `'^oC` and co-efficient of volume expansion of mercury `= 1.8 × 10^(-4)` /`'^

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

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Two bodies at different temperatures T1, and T2 are brought in thermal contact do not necessarily settle down to the mean temperature of T1 and

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

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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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A gas can have any value of specific heat depending upon how heating is carried out.

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

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

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A brass boiler has a base area of `0.15m^2` and thickness 1.0cm. It boils water at the rate of 6kg| min when placed on a gas stove, Estimate the temperature of the part of flame in contact with the boiler. Thermal conductivity of brass `= 10^9J|s|m|'^oC`, heat of vaporization of water `=

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

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How do you explain heating of rooms based on principle of

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

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Why is the energy of thermal radiation less than that of visible

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

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If a certain mass of gas is heated first in a small vessel of volume V1 and then in a large vessel of volume V2. Draw the P – T graph for two

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

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Establish the relation between ` (gamma=(C_P)/(C_V))`and degrees of freedom

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Two cylinders A and B of equal capacity are connected to each other via a stopcock. A contains a gas at standard temperature and pressure. B is completely evacuated. The entire system is thermally insulated. The stopcock is suddenly opened. Answer the following : Do the intermediate states of

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

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The density of water is 1000 kg `m^(–3)`. The density of water vapour at 100 °C and 1 atm pressure is 0.6 kg `m^(–3)`. The volume of a molecule multiplied by the total number gives ,what is called, molecular volume. Estimate the ratio (or fraction) of the molecular volume

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

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Answer of the following. What happens when a compressed gas pushes a piston out and expands. What would you observe

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

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