Heat and Work - Page 5

Questions
  • Heat is added to a system, and the system does 49 J of work. If the internal energy increases by 7 J, how much heat was added to the system?
  • An amount Q of heat is added to a mono atomic ideal gas in a process in which the gas performs a work Q/2 on its surrounding .find equation of the process?
  • A gas does 50 J of work as it expands adiabatically. Is the change in thermal energy of this gas 50 J, 0 J, or -50 J?
  • The work done during a isochoric process is?
  • Heat transfer... variable area. ?
  • The flow of thermal enery is called...?
  • How much work is done on a gas that is compressed from a volume of 1 x 10-3 m3 to a volume of 0.3 x 10-3 m3 at a constant pressure of 2 atmospheres (assuming the temperature stays the same)?
  • How does warmer temperatures affect takeoffs?
  • Under isobaric conditions (2.0x10^5Pa) a gas expands & does 500j of work. what is the change in its volume?
  • What are some examples of heat in thermodynamics?
  • What are applications of the high heat capacity of water in daily life?
  • A Carnot heat engine operates between 1000K and 500K. The duration of each cycle is 2s. How much work it can perform if the engine absorbs 30kJ of heat during each cycle?
  • A #400# #W# heating element heats #2.0# #kg# of a material with a specific heat of #400# #Jkg^(−1o)C^−1# for #40# #s#. By how much does its temperature change?
  • What occurs in a steam engine?
  • What is meant by thermionic emission?
  • How far can a mother push a 20.0 kg baby carriage, using a force of 62 N, if she can only do 2920 J of work?
  • Does temperature measure average amount of microscopic vibrational kinetic energy, or the total amount?
  • A container has #16 L# of water in it at #100 ^o C#. An object with a specific heat of #85 (KJ)/(Kg*K)# and a temperature of #180 ^oC# is placed into the container. If the water is completely vaporized, what is the object's mass?
  • What type of process occurs with no heat flow?
  • Show that for a closed loop in a Carnot engine, the energy is conserved in the heat flow at a certain temperature in each reservoir, i.e. show that #q_H/T_H + q_C/T_C = 0#?