Using the first law of thermodynamics, how would you answer this question?Axe199 said:So i am making a simple demonstration of ideal gas law using a cylinder piston system, heating the system so the piston is pushed up, i wanted to calculate the heat transferred into the system, will it be Cp(Tf-Ti) or Cp(Tf-Ti)+ work done by the system ?
well using the first law Q-W=ΔU, Q will equal to to ΔU+ W but i don't know how to calculate ΔUChestermiller said:Using the first law of thermodynamics, how would you answer this question?
For one mole of an ideal gas, ##\Delta U =C_v(T_f-T_i)##. Now what?abdo799 said:well using the first law Q-W=ΔU, Q will equal to to ΔU+ W but i don't know how to calculate ΔU
why use Cv not Cp the system has constant pressure and variable volumeChestermiller said:For one mole of an ideal gas, ##\Delta U =C_v(T_f-T_i)##. Now what?
The internal energy of an ideal gas is (a) a function of temperature only or (b) a function of temperature and volume (per unit mass)?abdo799 said:why use Cv not Cp the system has constant pressure and variable volume
Heat transfer is the movement of thermal energy from one object to another due to a difference in temperature. This can happen through conduction, convection, or radiation.
A closed system is a physical system that does not exchange matter with its surroundings, but can exchange energy. This means that no matter can enter or leave the system, but heat and work can be transferred in or out of the system.
Heat can be transferred into a closed system through conduction, convection, or radiation. In conduction, heat is transferred through direct contact between two objects. In convection, heat is transferred through the movement of fluids. In radiation, heat is transferred through electromagnetic waves.
The first law of thermodynamics states that energy cannot be created or destroyed, only transferred or converted from one form to another. In the case of heat transfer into a closed system, the first law of thermodynamics would be applied as the total amount of energy in the system (including heat) remains constant.
The amount of heat transferred into a closed system can be affected by several factors, including the temperature difference between the system and its surroundings, the thermal conductivity of the materials involved, and the surface area available for heat transfer. Additionally, the presence of insulation or barriers can also impact the amount of heat transferred into the system.