What are some tools you use to perform work? 2 What is a chain block used for? 3 Why do machines cannot have a 100% efficiency?
Q: What is power? Calculate the power to move a 9 J box in 20 seconds. Calculate the power used for a…
A: 1. When the work is done in unit time, then the quantity is known as power. Power is also defined as…
Q: Explain the working and drive an expression for efficiency of refrigerator
A: A carnot's cycle is perfectly reversible. It can work as a heat engine and also as a refrigerator.…
Q: 2. A 150W solar PV panel produces 15V and 7A when it is connected to a load under solar insolation…
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Q: a 1kg rock is released from a height of 20m ignoring air resistance, determine GPE, KE and total…
A: mass of rock (m) = 1 kg initial height = 20 m
Q: What is the efficiency of a heat engine that does 1250 J of work and gives off 5250 J of heat to the…
A: Given, Heat given to hot reservior, QH Heat given to cold reservior, QC Work done by heat engine,…
Q: A student places her 490 g physics book on a frictionless table. She pushes the book against a…
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Q: in the figure. The arrows of the curve indicate the direction of the process, and the points of…
A: As we know,Area under P-V curve is…
Q: A heat engine exhausts 9800 J of heat while performing 3000 J of useful work.
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Q: 12. Work energy depends on the Path. Please discuss this in your own understanding and give example.
A: In thermodynamics we came across of two modes of energy transfer that is work and heat. Although…
Q: Consider the following examples and try to imagine the possible scenario that may happen. To do so,…
A: spring compressed extended elastic compressed elastic potential negative negative positive
Q: 4. Is the amount of work accomplished dependent on how long it takes to accomplish that work?…
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Q: Suppose you spend 30.0 minutes on a stair-climbing machine, climbing at a rate of 70 steps per…
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Q: Decades ago, it was thought that huge herbivorous dinosaurs such as Apatosaurus and Brachiosaurus…
A: work required = force * distance = = (buoyant force - mg ) * distance = = (density of water * volume…
Q: What is the efficiency of an engine that exhausts 840 J of heat in the process of doing 360 J of…
A: The efficiency of a heat engine is given by η=WW+QCW=Work done by engineQC=Heat dumped given that…
Q: Which of the following processes is best represented by the work-energy bar chart below? W+Q=AUint A…
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Q: Answer question 11 showing fully all the steps. Solution should be simplified and easy to understand…
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Q: 1.How will you explain the first law of thermodynamics? Give a specific example. 2.What law…
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Q: If the energy efficiency ratio of a refrigerator is 17, what is its coefficient of performance? А.…
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Q: Photopea | Online... O YouTube * Paraphrasing Too... O Calculate online :. t: Free Es... Gmail…
A: B. As Skater gravitation potential energy will decrease, but its kinetic energy increase as comes…
Q: None
A: Step 1: Express the given informationThe work ( W ) gives the object a speed ( v ) and a kinetic…
Q: Assuming a track with friction, find the thermal energy at Y. Round off to four decimal places.…
A: Total energy at W (Tw) = 80.5986 J Total energy at Y (Ty) = 13.3378+13.0713 Ty = 26.4091 J
Q: The total generated power output of a wind turbine depends on generator efficiency and gearbox…
A: Gear box and Generator are two very main components of a wind turbine. Blades transfer power to…
Q: 12. What is the potential energy of a 3kg ball that is on the ground?
A: Given Mass of the ball is m=3 kg Height of the ball at the ground is y0=0
Q: Haas a gasoline engine is running and amount of gasoline containing 13,600 JF chemical potential…
A: The question asks to calculate the efficiency of a gasoline engine. The efficiency of an engine is…
Q: A PHYS 1510 student was working on a robotics project. The joints on the machine they were building…
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Q: In the future pennies have become obsolete and a new type of furnace is invented that converts the…
A: We are given mass of penny. We know the mass energy relation by Einstein. It is given as E=mc2 We…
Q: You Try solving the following problems. 9. A machine is 75 percent efficient. The work input is 4800…
A: The solution of this question is given below..
Q: 20. How many kcal does a 155 pound man expend when he rides a Monarch bicycle ergometer at 150 Watts…
A: Given value--- power =150 Watt. time = 20 min. We have to find--- expend energy?
Q: THERMODYNAMICS (PHYSICS) Fill in the blanks with the correct answer. A. ON B. BY C. EXPANDS…
A: According to question we need to fill the blanks .
Q: An object initially at rest and on the floor, is acted upon by an upward force, F. The force applies…
A: Given : W=2000J, m=1.4kg, g=9.81m/s2 A.) The potential energy of the object at h=2m is : P.E.…
Q: Question 15 Suppose a 12.0V potential difference is placed across a cylindrical conductor of…
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Q: a. What law explains the mechanism of heat engines? Support your answer. b. Why do machines are not…
A: Part a: In thermodynamics, the second law is explained the working mechanism of heat heat. Heat…
Q: An "energy bar" contains 25 g of carbohydrates. For the steps and strategies involved in solving a…
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Q: 1. What is the principle type of drag experienced by a skydiver when their parachute has been…
A: According to our guideline we have to do the first questions only. Please upload other questions…
Q: Explain different components of small hydroelectric power system and their design considerations
A: NOTE: As per Bartleby Guidelines only one part has to be solved at a time. Kindly upload other parts…
Q: Assuming that there are no heat effects and no frictional effects, find the kinetic energy of a…
A: Since there is no external force is acting on the body therefore we can apply energy conservation.…
Q: 1. Describe the principle of conservation of mechanical energy with words and an equation. Define…
A: Mechanical energy can be divided into two types. 1. Potential energy due to position of the particle…
Q: a temperature of 296 K. Over the course of one hour, the engine absorbs 1.35 x 10° J from the hot…
A: Efficiency η=1-T2T1 where T2 is temperature of sink and T1 is that of source. η=1-2901250=0.768
Q: Draw or Illustrate a concept map. Main topic: ENERGY TRANSFER (kinetic, thermal, gravitational…
A: Energy can neither created nor be destroyed but it can transfer from one form of energy to another…
Q: A hedgehog is foraging in Victoria Park. Its net gain rate ( γ ) is 55 KJ/hr and its energetic gain…
A: Given Net gain rate (Y) = 55 kJ/hr Energetic gain rate (b) = 80 kJ/hr Energetic expenditure…
Q: 2. A person stands at a height, h above the ground on a cliff edge. They decide to swing on a 30.0-m…
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Q: Suppose you spend 30.0 minutes on a stair-climbing machine, climbing at a rate of 75 steps per…
A: Given Weight W=150lb=150×4.44=666N Height of each step h=8×0.0254=0.2032 m Time t=30 min Step rate…
Q: Answer the following questions: a.How will you explain the first law of thermodynamics? Give a…
A: According to first law of thermodynamics : Heat is the form of energy that cannot be created or…
Q: Question 17 A gasoline engine with an efficiency of 0.49 generates 1.86 hp of power. If a liter of…
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