Thermodynamics Pt 2

When potential energy (PE) increases, kinetic energy (KE) ​​ (a)   .

• decreases
• increases
• remains the same
• goes to zero

When kinetic energy (KE) ​ (a)   , potential energy decreases.

• increases
• decreases
• remains the same
• goes to zero

Q > 0

• energy added to the system as heat

• energy removed from the system as heat

• no transfer of energy as heat

• work done by system

Q < 0

• energy added to the system as heat

• energy removed from the system as heat

• no transfer of energy as heat

• work done by system

W > 0

• work done by system

• work done on system

• no work done

• no transfer of energy as heat

W < 0

• work done by system

• work done on system

• no work done

• energy removed from system as heat

Q = 0

• no transfer of energy as heat

• no work done

• energy added to system as heat

• energy removed from system as heat

W = 0

• no work done

• work done by system

• no transfer of energy as heat

• work done on system

Which of the following is the equation for the first law of thermodynamics?

• ΔU = Q - W

• ΔU = Q/W

• ΔU = Q + W

• ΔU = Q•W

True or False: The first law of thermodynamics is the principle of energy conservation that takes in to account a system's internal energy as well as work and heat

• True

• False