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An indirectly heated filament is radiating maximum energy of wavelength 2.16*10-5cm Find the net amount of heat energy lost per second per unit area. the temperature of surrounding air is 13°C .Assuming it as black body .Giv ...
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while calculating the amount of the sun's radiation reaching the earth's surface, should we take the earth to b a disc or a sphere?? how 2 be assured that the asuumptions taken are correct?? ...
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What is the average velocity of a molecule of a gas??? ...
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the rates of cooling of two different liquids put in exactly similar calorimeters and kept in identical suuroundings are the same if a)The masses of the liquids are equalb)equal masses of the liquids at same teperatures are t ...
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What will happen to rooms temperature when door of the fridge is left open?? Plzz explain with clearly ...
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can any1 tell me da logic bhind findin da temp of any jn?(better if gn wid an example) ...
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Consider a container which contains just one molecule of a gas. What will happen if you: (1) double the volume keeping temperature constant (2) double the temperature keeping pressure constant? ...
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At high temperaturs we hav to consider vibrational energy along with trans and rotational.... now at high temp. cv=3R/2 for monoatomic Cv>5R/2 for diatomic gases xplain....... ...
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The surface of earth receives solar radiations at the rate of 1400 W/m2 The distance of the centre of the sun from the surface of the earth is 1.5 x 1011m and the radius of the sun is 7 x 108m Treating sun as a black body It ...
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Plot a curve b/w P vs V plot: A(V0,P0) B(V0,3P0) C(3V0,P0) join A, B, C with straight lines Find Efficiency ...
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theres a hollow sphere filled with water................the temperature outside is T(<0 C) and radius of sphere is R.........density of ice is P and thermal conductivity is k................find da time required for da ent ...
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an ideal gas is initially at temperature T and volume V Its volume is increased by V' due to an increase in temperature T' Pressure remaining constant The quantity s=V'/(VT') varies with temperature as Isn't the asked quantit ...
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an immersion heater , in a insulated vessel of negligible heat capacity brings 100 g of water to the boiling point from 16 degrees in 7 min. then find 1} power of heater 2}the water is replaced by 200 g alcohol, which is heat ...
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A straight glass tube has sealed lower end and upper end open to atmosphere.The lower half is filled with n moles of diatomic gas .The length of the tube is 1.52 m How much heat should be provided to the gas such that all the ...
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In an alpha decay, energy released is 50Mev. It’s also known that KE wid which alfa particle is ejected is 48Mev. Wat is mass no parent nucleus?? ...
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A solid copper (density Ï and specific heat c) of radius r at an initial temperature 200 K is suspended inside a chamber whose walls are at almost 0 K.What is the time required for the temperature of sphere to drop to 100K ...
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Which of the Following parameters does not characterize the Thermodynamic State of Matter (1) Pressure (2) Work (3) Volume (4) Temperature A Basic Question So quickly find itz answer ...
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We know thermal current deltaQ/delta(t) = kAdT/dx Our sir said here dQ/dt is not defined.. Why? ...
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On a cold day, you are covering all parts of your body against the cold weather......except your hands. After sometime, if you place your hands on your stomach, will you feel hot or cold? ...
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An engine using 1 mole of an ideal gas initially at V1 = 33.2 litre and 400 K performs a cycle ABCDA consisting of four steps: (1) an isothermal expansion at T = 400 K to twice its initial volume (AB), (2) cooling at constant ...
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suppose you put 100 pennies in cup , shake the cup , and then toss the pennies onto floor (A)how many different head-tail arrangement(microstate) are possible for the 100 pennies ? what is the probability of finding exact ...
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A tube of length L contains a gas at temperature T. One end of the tube is closed and the other end is open. A small speaker producing sound of variable frequency is placed at the open end. The frequency of the speaker is inc ...
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n moles of a monoatomic gas initiall at temp t is enclosed in a cylindrical vessel fitted with a light piston. Surrounding air temp =Ts=5T and atmos pressure=P. Heat may be conducted btw the surrounding & the gas ...
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wht is a polytropic process n how to usse it...plz explain!! ...
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A steel ball initially at a temperature of 100kPa is heated from 20degree celcius to 120degree celcius keeping the volume constant. Find the pressure inside the ball. Coefficient of linear expansion of steel is 12*10^(-6) and ...
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a body of density Ï enters a tank of water of density σ after falling througgh height h. the max depth to which it sinks in water ...