Heat and Work - Page 3
Questions
- Why does more heat transfer take place in a reversible process than in a irreversible process?
- If for an ideal gas its volume is compressed by a factor of 3, and the gas has cooled down as a result, by what factor is the pressure changed?
- I need help with this please. Thanks?!
- In the morning, a concrete statue of specific heat = 600 j/(kg k) has a temperature of 15°c. during the day, it sits in the sun and warms up to 40°c, gaining 90,000 j of thermal energy. what is its mass?
- A 50kg man is running at a speed of 18 kmph If all the kinetic energy of the man can be used to increase the temperature from 20°c to 30°c ,how much water can be heated with this energy?
- A system performs 354 J of work on its surroundings while losing 133 J of internal energy. How would you determine the heat transferred to the system during this process?
- How does heat affect a chemical reaction?
- How can heat cause motion in a liquid?
- 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?
- 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)?
- What are some examples of heat in thermodynamics?
- The flow of thermal enery is called...?
- A system releases 318 kJ of heat while 289 kJ of work is done on the system. What is the change in internal energy?
- Heat transfer... variable area. ?
- The work done during a isochoric process is?
- A gas in a cylinder with a moveable piston is heated with 94 J of energy, causing the piston to rise. If the internal energy of the system increases by 30 J, how much work is done by the gas?
- What is the amount of energy liberated in joules when 85 g of water cools from 45 C to 25 C.?
- What are applications of the high heat capacity of water in daily life?
- 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?
- 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?