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Determine the change in entropy, in joules, when 5 moles of an ideal gas expands from a value of 4 lits. to 40 lits. at 27°C. (R = 8.314 JK -1 mol -1 )
a loaded cart has a mass of 227kg. if a 312n force acting at an angle of 30degree to the ground is applied. how much work is done in moving the cart 15meters?
State the law of radioactive decay. Show that radioactive decay is exponential in nature. Does the activity of a radioactive element depend on external physical conditions? La
what is the unit of hardness?
Consider air (ideal gas) as working substance inside a piston-cylinder device (closed system). This air undergoes a power cycle as shown in figure. Determine work output per unit m
When a body is heated, it expands in terms of area, length & temperature and volume rises. In a solid, molecules may only have thermal agitation. As temperature of a object enhance
The time needed for a net force of 10 newtons to change the velocity of a 5 kilograms mass by 3 meters/second is: a) 1.5 seconds b) 6 seconds c) 16.7 seconds d
What occures to Internal Energy of a system ,if work is done (a) on the system, (b) by the system.
When an electron makes transition from higher energy level having energy E2(n2) to a lower energy level having energy E1 (n1) then a photon of frequency v is emitted.
Laws of limiting friction
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