Answered: 21 // (kg 1) of copper tape heated at… | bartleby

Related questions

Question

21 // (kg 1) of copper tape heated at atmospheric pressure. If his temperature increased from
(20) to (50).
1) What is the work done on the copper strip by the atmosphere?
2) How much energy is transferred to the copper strip by heat?

Expert Solution

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Blurred answer

Similar questions

4) A ground source heat pump heats a building by extracting heat from the ground and pumping it into the building. Define: Qc = heat extracted from the ground, Qn= heat pumped into the building, W = electric energy used by the heat pump, Tc= temperature of the ground, T = temperature of building (Qc, Qn, and W are positive by definition). Assume Tr > Tc. a) Draw a diagram showing energy flow in and out of the heat pump. b) Write a general expression for the change AS in the entropy of the "universe", that is the heat pump plus the cold and hot reservoirs, in terms of the quantities defined above. Now assume ideal (reversible) operation, and take Te= 10 °C and Tp= 20 °C. What is the coefficient of performance (ČOP) of the heat pump? By what factor would this change if we had Tc = 0 °C instead?
46:56 WLwvimdGI A 52-kg package is lifted to the top shelf in a storage bin that is 4 m above the ground floor. How much increase in potential energy does the package get? O 1504733.118 Ib-ft 1937.104 BTU O 2040.48 kJ O 2.04 kJ
9) A heat pump is used to move heat from 10°C air outside, to a 22 °C air inside. The practical coefficient of performance of this pump is 4.1, and it uses 12000 J of electric energy. a) Find the energy this system adds to the house. b) Find the theoretical (maximum) coefficient of performance for this system. 5
bacon-cheddar-double-burger meal along with A 65.0-kg mountain climber just ate a Johnny Rocket's two peanut butter milkshakes, which have 5810 Calories (5810 kilocalories). Assume she can convert these calories into energy with 100% efficiency and use the fact that 1 kcal = 4186 J. Calculate how many times she could climb up Mt. Everest - the world's tallest mountain. The height of Mt. Everest is 8840 m.
#7 The AC can be run backwards and used as a heat pump during cool houston mornings in the months September-November, and February-April. Suppose that the outside is 40 degrees F and the inside temperature is to be maintained at 70 degrees F. What is the minimum electrical work that must be performed on the compression for every kJ of heat liberated in the house?
An object with mass of 100 kg, moving at a speed of 20 m/s, collides with wall and is crushed. Calculate the heat released if it is 30% of the whole impact energy. /Give the answer in [J] /