The First & Zeroth Laws of Thermodynamics: Crash Course Engineering #9

The video explores energy conversion in daily life and engineering, focusing on thermodynamics. It introduces the zeroth and first laws of thermodynamics, explaining concepts like thermal equilibrium and energy conservation. The video also discusses different types of energy, such as kinetic, potential, and internal energy, and how they apply to closed and open systems in engineering contexts.

What is the primary focus of thermodynamics in engineering?

• Developing new chemical compounds

• Designing new materials

• Converting energy, often in the form of heat and work

• Studying the behavior of gases

What does the zeroth law of thermodynamics help establish?

• The conservation of energy

• Thermal equilibrium

• The conversion of energy to work

• The behavior of gases under pressure

According to the first law of thermodynamics, what can happen to energy?

• It can only be stored

• It can be lost in a system

• It can be converted from one form to another

• It can be created or destroyed

Which type of energy is associated with the random movement of molecules?

• Kinetic energy

• Potential energy

• Internal energy

• Thermal energy

In a closed system, what does the first law of thermodynamics state about energy changes?

• Energy changes are only due to work done

• Energy changes are equal to heat added minus work done

• Energy changes are only due to heat added

• Energy changes are independent of heat and work

What is enthalpy used for in open systems?

• To measure temperature changes

• To calculate pressure differences

• To include internal energy and energy for volume and pressure

• To determine the speed of energy transfer

Which process involves no heat transfer?

• Cyclic process

• Isothermal process

• Adiabatic process

• Isochoric process