Thermodynamics

Is perpetual motion possible? 

• No, it is impossible because a system follows the 1st law of thermodynamics.

• Yes, some machines can work continuously forever without outside input.

As a thermodynamic system does work it _______ heat.

• Loses

• Gains

• Traps

• Leaks

When work is done on a system it ________ heat.

• Loses

• Gains

• Leaks

• Traps

In a system the term internal energy refers to

• all the kinetic and potential energy in a system.  This depends also on the mass and size of the object. 

• the average kinetic energy of the o

What letter represents internal energy and heat respectively?

• Q = internal energy

  U = Heat

• U = internal energy

  Q = heat

What is meant by "a closed system"?

• It is in a vacuum.

• It is shut.

• It is completely isolated from the universe.

• It is not powered on.

The first law of thermodynamics is the equation U (internal energy) = Q (heat) - W (work).  It basically says that there is a conservation of 

• volume

• temperature

• pressure

• Energy

Which process can do work? W = F x D

• isobaric

• isothermal

• isovolumetric

what doe the suffic "iso" mean such as in isobaric, isovolumetric and isothermal?

• decreases

• stay constant

• increases

In an adiabatic process what is the value of Q or heat? 

• 0

• negative

• positive