Physics
Heat
Easy

Question

If  straight capital delta Q text  and  end text straight capital delta W  represent the heat supplied to the system and the work done on the system respectively, then the first law of thermodynamics can be written as
where straight capital delta U  is the internal energy

  1. straight capital delta Q equals straight capital delta U plus straight capital delta W
  2. straight capital delta Q equals straight capital delta U minus straight capital delta W
  3. straight capital delta Q equals straight capital delta W minus straight capital delta U
  4. straight capital delta Q equals negative straight capital delta W minus straight capital delta U

The correct answer is: straight capital delta Q equals straight capital delta U minus straight capital delta W


    Related Questions to study

    Heat
    Physics

    If 150 J of heat is added to a system and the work done by the system is 110 J, then change in internal energy will be

    If 150 J of heat is added to a system and the work done by the system is 110 J, then change in internal energy will be

    PhysicsHeat
    Heat
    Physics

    A perfect gas contained in a cylinder is kept in vacuum. If the cylinder suddenly bursts, then the temperature of the gas

    A perfect gas contained in a cylinder is kept in vacuum. If the cylinder suddenly bursts, then the temperature of the gas

    PhysicsHeat
    Heat
    Physics

    A thermodynamic process of one mole ideal monoatomic gas. The efficiency of cyclic process ABCA will be

    A thermodynamic process of one mole ideal monoatomic gas. The efficiency of cyclic process ABCA will be

    PhysicsHeat
    parallel
    Heat
    Physics

    A sample of an ideal gas is taken through a cycle a shown in figure. It absorbs
    50 J of energy during the process AB, no heat during BC, rejects 70 J during
    CA. 40J of work is done on the gas during BC . Internal energy of gas at A is 1500 J, the internal energy at C would be

    A sample of an ideal gas is taken through a cycle a shown in figure. It absorbs
    50 J of energy during the process AB, no heat during BC, rejects 70 J during
    CA. 40J of work is done on the gas during BC . Internal energy of gas at A is 1500 J, the internal energy at C would be

    PhysicsHeat
    Heat
    Physics

    A tyre pumped to a pressure 3.375 atm at 27oC suddenly burts. What is the final temperature left parenthesis gamma equals 1.5 right parenthesis ?

    A tyre pumped to a pressure 3.375 atm at 27oC suddenly burts. What is the final temperature left parenthesis gamma equals 1.5 right parenthesis ?

    PhysicsHeat
    Heat
    Physics

    When 1 mole of a monatomic gas is mixed with 3 moles of a diatomic gas , the value of adiabatic exponent gamma for the mixture is :

    When 1 mole of a monatomic gas is mixed with 3 moles of a diatomic gas , the value of adiabatic exponent gamma for the mixture is :

    PhysicsHeat
    parallel
    Heat
    Physics

    The molar heat capacity of a gas in a process

    The molar heat capacity of a gas in a process

    PhysicsHeat
    Heat
    Physics

    A fixed mass of a gas is adiabatically made to expand to double its volume and then isochorically heated to bring the gas to the original pressure . The ratio of final to initial temperature will be

    A fixed mass of a gas is adiabatically made to expand to double its volume and then isochorically heated to bring the gas to the original pressure . The ratio of final to initial temperature will be

    PhysicsHeat
    Heat
    Physics

    Find the amount of work done to increase the temperature of one mole of an ideal gas by 30°C , if it is expanding under condition V proportional to T to the power of 2 divided by 3 end exponent. R is gas constant

    Find the amount of work done to increase the temperature of one mole of an ideal gas by 30°C , if it is expanding under condition V proportional to T to the power of 2 divided by 3 end exponent. R is gas constant

    PhysicsHeat
    parallel
    Heat
    Physics

    During an experiment an ideal gas is found to obey an additional law VP2 = constant. The gas is initially at temperature T and volume V. What wiII be the temperature of the gas when it expands to a volume 2V?

    During an experiment an ideal gas is found to obey an additional law VP2 = constant. The gas is initially at temperature T and volume V. What wiII be the temperature of the gas when it expands to a volume 2V?

    PhysicsHeat
    Heat
    Physics

    A polytropic process for an ideal gas is represented by equation PVn = constant. If g is ratio of specific heats open parentheses C subscript p over C subscript v close parentheses, then value of n for which molar heat capacity of the process is negative, is given as :

    A polytropic process for an ideal gas is represented by equation PVn = constant. If g is ratio of specific heats open parentheses C subscript p over C subscript v close parentheses, then value of n for which molar heat capacity of the process is negative, is given as :

    PhysicsHeat
    Heat
    Physics

    If the ratio of specific heat of a gas at constant pressure to that at constant volume is gamma, the change i n internal energy of the mass of gas , when the volume changes from V to 2V at constant pressure p , is

    If the ratio of specific heat of a gas at constant pressure to that at constant volume is gamma, the change i n internal energy of the mass of gas , when the volume changes from V to 2V at constant pressure p , is

    PhysicsHeat
    parallel
    Heat
    Physics

    One mole of an idea l gas at a temperature T1K expands slowly according to the law p over V equals text  constant.  end textIts final temperature is T2K . The work done by the gas is

    One mole of an idea l gas at a temperature T1K expands slowly according to the law p over V equals text  constant.  end textIts final temperature is T2K . The work done by the gas is

    PhysicsHeat
    Heat
    Physics

    Initial volume of three samples of same gas A,B and C are same. The process A is adiabatic, B is isobaric and C is isothermal. Each of the sample has same final pressure and volume. The initial pressure of which sample was maximum.

    Initial volume of three samples of same gas A,B and C are same. The process A is adiabatic, B is isobaric and C is isothermal. Each of the sample has same final pressure and volume. The initial pressure of which sample was maximum.

    PhysicsHeat
    Heat
    Physics

    In an adiabatic process R equals 2 over 3 C subscript v. The pressure of the gas Will be proportional to :

    In an adiabatic process R equals 2 over 3 C subscript v. The pressure of the gas Will be proportional to :

    PhysicsHeat
    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.