Physics
Grade-9
Easy
Question
In an open system, _______ can get into or out of the system.
- Heat
- Matter
- Both a and b
- Neither a nor b
Hint:
open system examples are steam turbines and stove top.
The correct answer is: Both a and b
In an open system, both heat and matter can get into or out of the system.
In an open system, both mass and energy (heat and matter) can be transmitted. An open system can exchange both matter and energy that is present with its surroundings. The matter is easily exchanged between the open system and its surroundings. This can be simply described by adding or subtracting matter.
Related Questions to study
Physics
______ separates the system from the surroundings.
______ separates the system from the surroundings.
PhysicsGrade-9
Physics
Which of the following is an extensive property of a system?
Which of the following is an extensive property of a system?
PhysicsGrade-9
Physics
What are the particles of the system (red-hot iron rod) shown below?
What are the particles of the system (red-hot iron rod) shown below?
PhysicsGrade-9
Physics
Which of the following cannot be a heat reservoir?
Which of the following cannot be a heat reservoir?
PhysicsGrade-9
Physics
During a thermodynamic process, 30 joules of heat are added to a gas while 25 joules of work are done by the gas. The change in internal energy of a system is ____ J.
During a thermodynamic process, 30 joules of heat are added to a gas while 25 joules of work are done by the gas. The change in internal energy of a system is ____ J.
PhysicsGrade-9
Physics
During an isothermal process 125 J of heat are removed from a trapped gas. Find out the change in internal energy of the system.
During an isothermal process 125 J of heat are removed from a trapped gas. Find out the change in internal energy of the system.
PhysicsGrade-9
Physics
In an isothermal process the change in internal energy of the system is ____.
In an isothermal process the change in internal energy of the system is ____.
PhysicsGrade-9
Physics
During a thermodynamic process, 438 J of heat is removed from a gas system while 238 J of work is done on the gas. The change in internal energy of a system is _____ J.
During a thermodynamic process, 438 J of heat is removed from a gas system while 238 J of work is done on the gas. The change in internal energy of a system is _____ J.
PhysicsGrade-9
Physics
A cold reservoir is touched to a system, which of the following may happen?
A cold reservoir is touched to a system, which of the following may happen?
PhysicsGrade-9
Physics
When there is no heat exchange between the system and the reservoir, ____.
When there is no heat exchange between the system and the reservoir, ____.
PhysicsGrade-9
Physics
The internal energy of a system does not change in a/an _____ process.
(A) Isothermal
(B) Adiabatic
(C) Isochoric
(D) Isobaric
The internal energy of a system does not change in a/an _____ process.
(A) Isothermal
(B) Adiabatic
(C) Isochoric
(D) Isobaric
PhysicsGrade-9
Physics
Energy can be added to a system by ____.
Energy can be added to a system by ____.
PhysicsGrade-9
Physics
Internal energy denotes ______.
Internal energy denotes ______.
PhysicsGrade-9
Physics
When the pressure inside the system is smaller than the pressure outside it, the work is done ______.
When the pressure inside the system is smaller than the pressure outside it, the work is done ______.
PhysicsGrade-9
Physics
During a thermodynamic process, 540 J of heat is removed from a gas system while 1200 J of work done on the gas. The change in internal energy of a system is _______J.
During a thermodynamic process, 540 J of heat is removed from a gas system while 1200 J of work done on the gas. The change in internal energy of a system is _______J.
PhysicsGrade-9
