8. When we burn a fuel, what is released that allows work to be done

Q: The second law of thermodynamic is measure of how much useful work you can get from an engine. is…

A: Required: What is second law of thermodynamics? Answer : a measure of the disorder in a system.

Q: Please help! Thank you! A 68.4-kg sky diver jumped out of an airplane at an altitude of 0.900 km.…

A: Given Data : The mass of the skydiver is given as m = 68.4 Kg. The height of the skydiver initially…

Q: A fire is lit in a hot air balloon, causing 100 J of heat to flow into the air in the balloon.…

A: The change in internal energy is given by, ∆U=Q-W

Q: 18- Bolum-8+A2B1C3UUXID5V A25 g bal a released from rest 80 m above the surface of Earth. During the…

A: To answer: The velocity of the ball just before it hits the surface.

Q: 11) A 800kg car moving at 20m/s hits a 1200kg parked car head on. How much mechanical energy is…

A: In a completely inelastic collision, the moving body hits the other body and then both the bodies…

Q: A bucket full of sand has a mass of 20 kg (including the bucket and the sand). The bucket is to be…

A:

Q: A moveable piston of a closed container containing an ideal gas is lifted to 3 m after it is heated…

A: Energy by piston = 3.5 ×3=10.5 J

Q: What, thermodynamically speaking, do living things exist for? -Free Energy that is not used for…

A:

Q: Mr Smith buys some solar panels to heat the water for his house.Explain how this will help to reduce…

A: We generally use electricity or gas to heat water. There is heat transfer from gas to water. Hence…

Q: A 1600 kg car steadily accelerates from rest to 60 mi/hr over a 2.8 second time span. How much work…

A: Given:mass of car, m = 1600 kgfinal velocity, vf = 60 mi/hr = 26.816 m/s

Q: Amy 68 kg in mass eat a Sausage 'N Egg McMuffin and drink a medium size orange juice for breakfast.…

A: Given,mass of Amy=68kgspeed v=15km/h

Q: How much work is done on the gas in the process shown, in Joule?

A: A PV-diagram showing a thermodynamic process. Note: 1 kPa=1000 Pa 1 m3=106 cm3 1 J=1 Pa·m3 Find:…

Q: A weight lifter bench‑presses a 150.0 kg barbell from his chest to a height equal the length of his…

A: Solution:   Given Values, Mass of barbell (m)=150 KgHeight (h)=0.850 m

Q: The biggest drawback to extensive use of photovoltaic cells is

A: A Photovoltaic cell is a device which converts light energy into electrical energy.

Q: Some energy is lost in every energy conversion. Explain the meaning of this statement. (Direct your…

A: Energy transformed into another form involves energy loss.  But, it is a known theory in Physics…

Q: 8. A water tank has the shape of a box that is 3 m wide, 2 m long and 4 m high. If the tank is full,…

A: Given : l=3 m b=2 m h=4 m We have to find the work done to pump the water to the level of the top of…

Q: Q08. In Figure, by which closed path (cyclic process), starting and ending at "initial" and passing…

A: the work done by the system in a cyclic transformation is equal to the heat absorbed by the system.…

Q: 9. A neatly arranged bookshelf is very orderly system and has low entropy why is it safe to assume…

A: Entropy, the measure of a system's thermal energy per unit temperature that is unavailable for doing…

Q: 5. An aviation fuel used by a piston engine aircraft transforms 100,042 J of energy through the…

A: Energy produced by aviation fuel ( Input energy) = 100042 JHeat produced by vapourization = 46721…

Q: When a certain type of coal is burned at a power plant, 22.6 ×106×106 joules per kilogram are…

A:

Q: 29. The law of conservation of energy states that energy * Cannot be created or destroyed. Is…

A: Law of conservation of energy: The total energy of the system remains constant. In other words,…

Q: 1. Rick spends four hours researching on the internet and does 1090 J of work. In the process, his…

A: Given data The work done by rick is given as W = 1090 J. The decrease in internal energy is given…

Q: 1. A heat engine with an efficiency of 35% does 600 J of work in each cycle. How much heat must be…

A: Given values: Efficiency of heat engine in percentage, η=35 % Work, W=600 J

Q: 8. Calculate the efficiency of a fossil-fuel power plant that consumes 382 metric tons of coal each…

A:

Q: Is the engine still firing? Explain.

A: Yes.

Q: 9. When an object doubles its speed, the kinetic energy increases by a factor of a) 1 d) 6 b) 2 e) 8…

A: 9. we know that the kinetic energy of an object is defined as  KE=12mv2 where m is the mass of the…

Q: 1. What is the work required to cycle 60 revolutions with a resistance setting of 4 kp on a Monark…

A: 1. Given that, 1 pedal revolution = 6 m 1 kp = 10 N Distance, d = 60 revolutions => d = 60*6…

Q: Q6. Which quantity needs to be decreased (TL or TH) to increase the efficiency of a Carnot engine…

A: efficiency = 1-(Tl/Th) where Tl is lower temperature  Th is higher temperature.

Q: . You find yourself in the middle of a blackout with no electricity. You want to have a cup of tea,…

A: volume of water (V) = 200 cm3density of water = 1 gcm3∆h = 32 cm = 0.32 m Initial temperature of…

Q: Frozen waste from airplane toilets has sometimes been accidentally ejected at high altitude.…

A: Given,

Q: Physical systems work in a “one-way street” – the amount of information we have about the state…

A: Energy : It is the ability of an object to do work. There are different types of energy. Example:…

Q: 3. How long must a 400 W electrical engine work in order to produce 300 kJ of work?

A: GivenPower of electrical engine, P=400 WWork done , W=300 kJ

Q: An ideal gas is initially at (14 Pa, 5 m3) and expanded to (25 Pa, 19 m3). The expansion is along a…

A: Given : InitiallyP1,V1=14Pa,5m3Final stateP2,V2=25Pa,19m3Expansion is along straight line path on a…

Q: While walking 300000J give off, the internal energy decreased by 750000J. Find the work ??

A:

Q: Rub your hands together vigorously. What happens? Discuss the energy transfers and transformations…

A: Hands are felt warm when rubbed. When we rub the hands,hands are having kinetic energy .It is the…

Q: 15. Refer to the graph below. Calculate the total work done from t = 0.00m to t= 8.00 me 12 10 2 Ar…

A: The area under the curve of the force v/s displacement graph gives the work done.

Q: Distinguish between high-quality energy and low-quality energy in terms of organized and…

A:

Q: 6. An engine releases 1675 J of energy per cycle and performs  200J of work. How much heat is…

A:

Q: Integrated Concepts - Frozen waste from airplane toilets has sometimes been accidentally ejected at…

A: The expression used to find mass of the ice is Q=PE+∆KEmL=Mgh+12Mv2-v02m=Mgh+12Mv2-v02L