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The efficiency of particula t e 320 Part A the higher ristamperature of what is the...
Constants Part A The position of a squirrel running in a park is given by T[(0.280...
Constants Part A The position of a squirrel running in a park is given by T[(0.280 m/s)t(0.0360 m/s?)t2]i- (0.0190 /)3j. What is u (t), the z-component of the velocity of the squirrel, as function of time? ○ vx(t) = (0.280 m/s)t + (0.0720 m/s*)e 。Ug(t)= (0.0720 m/s*)t O x(t) = 0.280 m/s + (0.0720 m/s)t x(t) 0.280 m/s Submit Reques Answer Part What is vy (t), the y-component of the velocity of the squirrel, as function of time? 0 ty...
A Carnot engine has an efficiency of 45 % and takes in heat from a high-temperature...
A
Carnot engine has an efficiency of 45 % and takes in heat from a
high-temperature reservoir at 168 ∘C.
What is the Celsius temperature of the engine's
low-temperature reservoir?
T = _____ °C
(Answer is NOT 168°C)
Take temperatures and efficiencies to be exact. A Carnot engine has an efficiency of 45 % and takes in heat from a Nigh-temperature reservoir at 168 °C Part A What is the Celsius temperature of the engine's low-temperature reservoir? Express your answer...
ReviewI ConstantsI Periodic Table Part A Converting sunlight to electricity with solar cells has an efficiency...
ReviewI ConstantsI Periodic Table Part A Converting sunlight to electricity with solar cells has an efficiency of 15%. It's possible to achieve a higher efficiency (though currently at higher cost) by using concentrated sunlight as the hot reservoir of a heat engine. Each dish in the figure concentrates sunlight on one side of a heat engine, producing a hot-reservoir temperature of 530 °C. The cold reservoir, ambient air, is approximately 28 °C. The actual working efficiency of this device is...
Review ▼ Part A A jet plane is cruising at 320 m/s when suddenly the pilot...
Review ▼ Part A A jet plane is cruising at 320 m/s when suddenly the pilot turns the engines up to full throttle. After traveling 3.2 km, the jet is moving with a speed of 400 m/s. What is the jet's acceleration, assuming it to be a constant acceleration? Express your answer to two significant figures and include the appropriate units. Submit
Consider the sinusoidal voltage v (t) = 40 cos (100t+60°) V. Part A Part D Part...
Consider the sinusoidal voltage v (t) = 40 cos (100t+60°) V. Part A Part D Part G What is the maximum amplitude of the voltage? Express your answer to three significant figures and include the appropriate units. What is the phase angle in radians? Express your answer in radians to three significant figures. What is the first time after t=0 that v=-40V? Express your answer to three significant figures and include the appropriate units. ? TO AD U veca o...
t nc automated stations, and (e) labor efficiency on the line. 4.6 A manual assembly line...
t nc automated stations, and (e) labor efficiency on the line. 4.6 A manual assembly line is being designed for a product whose annual demand is 100,000 units The line will operate 50 wk/yr, 5 shifts/wk, and 8 hr/shift. Work units will be attached to a con- moving conveyor. Work content time is 42.0 min.Assume line efficiency is 0.95, bal- is 0.93 or slightly less, repositioning time is 6 sec, and manning level is 1.4 Determine (a) average hourly production...
a) In thermodynamics, what is the second law efficiency? How does it differ from the first...
a) In thermodynamics, what is the second law efficiency? How does it differ from the first law efficiency? (2 marks) b) Can a system have a higher second law efficiency than the first law efficiency during a process? Give examples (Hint: Consider efficiencies of a reversible cycle). (2 marks) c) An ideal gas is stored in a closed vessel at pressure p and temperature T. If p = po, derive an expression for the specific exergy in terms of T,...
Part A f a flea can jump straight up to a height of 21.7 cm, what...
Part A f a flea can jump straight up to a height of 21.7 cm, what is its initial speed as it leaves the ground, neglecting air resistance? U initial m/s Part How long is it in the air? Part C What is the magnitude of its acceleration while it is moving upward? m/s Submit Request Answer Part D What is the direction of its acceleration while it is moving upward? Submit ▼ Part E Submit Part E What is...
13. According to the theory of efficiency wages (x)anything that makes the efficiency wage rise relative...
13. According to the theory of efficiency wages (x)anything that makes the efficiency wage rise relative to the market-clearing wage will increase the quantity demanded of labor and reduce the quantity supplied of labor .(y)firms may choose to pay a wage above the equilibrium level to attract the best skilled workers, to provide an incentive to work hard and to reduce worker turnover. (z)anything that makes the efficiency wage rise relative to the market-clearing wage will cause a surplus of...
Please help! Can't figure out Part E. PHY 241 University Physics Spring 2019 Chapters 1 8ampamp...
Please help!
Can't figure out Part E.
PHY 241 University Physics Spring 2019 Chapters 1 8ampamp a https/ Submitted Answers ANSWER1 CChapters 1 &:amp; 2 Item 16 What is the speed at t -52s? Express your answer using two significant figures. z 30 m Constants 1 Periodic Table The acceleration of a particle is given by a Av/t where A v 20 m/s ANSWER 2 1.8 m/s2 At t 0, u = 6.1 m/s and x = 0 Previous Answers...
Constants Part A The position of a squirrel running in a park is given by T[(0.280 m/s)t(0.0360 m/s?)t2]i- (0.0190 /)3j. What is u (t), the z-component of the velocity of the squirrel, as function of time? ○ vx(t) = (0.280 m/s)t + (0.0720 m/s*)e 。Ug(t)= (0.0720 m/s*)t O x(t) = 0.280 m/s + (0.0720 m/s)t x(t) 0.280 m/s Submit Reques Answer Part What is vy (t), the y-component of the velocity of the squirrel, as function of time? 0 ty...
A
Carnot engine has an efficiency of 45 % and takes in heat from a
high-temperature reservoir at 168 ∘C.
What is the Celsius temperature of the engine's
low-temperature reservoir?
T = _____ °C
(Answer is NOT 168°C)
Take temperatures and efficiencies to be exact. A Carnot engine has an efficiency of 45 % and takes in heat from a Nigh-temperature reservoir at 168 °C Part A What is the Celsius temperature of the engine's low-temperature reservoir? Express your answer...
ReviewI ConstantsI Periodic Table Part A Converting sunlight to electricity with solar cells has an efficiency of 15%. It's possible to achieve a higher efficiency (though currently at higher cost) by using concentrated sunlight as the hot reservoir of a heat engine. Each dish in the figure concentrates sunlight on one side of a heat engine, producing a hot-reservoir temperature of 530 °C. The cold reservoir, ambient air, is approximately 28 °C. The actual working efficiency of this device is...
Review ▼ Part A A jet plane is cruising at 320 m/s when suddenly the pilot turns the engines up to full throttle. After traveling 3.2 km, the jet is moving with a speed of 400 m/s. What is the jet's acceleration, assuming it to be a constant acceleration? Express your answer to two significant figures and include the appropriate units. Submit
Consider the sinusoidal voltage v (t) = 40 cos (100t+60°) V. Part A Part D Part G What is the maximum amplitude of the voltage? Express your answer to three significant figures and include the appropriate units. What is the phase angle in radians? Express your answer in radians to three significant figures. What is the first time after t=0 that v=-40V? Express your answer to three significant figures and include the appropriate units. ? TO AD U veca o...
t nc automated stations, and (e) labor efficiency on the line. 4.6 A manual assembly line is being designed for a product whose annual demand is 100,000 units The line will operate 50 wk/yr, 5 shifts/wk, and 8 hr/shift. Work units will be attached to a con- moving conveyor. Work content time is 42.0 min.Assume line efficiency is 0.95, bal- is 0.93 or slightly less, repositioning time is 6 sec, and manning level is 1.4 Determine (a) average hourly production...
a) In thermodynamics, what is the second law efficiency? How does it differ from the first law efficiency? (2 marks) b) Can a system have a higher second law efficiency than the first law efficiency during a process? Give examples (Hint: Consider efficiencies of a reversible cycle). (2 marks) c) An ideal gas is stored in a closed vessel at pressure p and temperature T. If p = po, derive an expression for the specific exergy in terms of T,...
Part A f a flea can jump straight up to a height of 21.7 cm, what is its initial speed as it leaves the ground, neglecting air resistance? U initial m/s Part How long is it in the air? Part C What is the magnitude of its acceleration while it is moving upward? m/s Submit Request Answer Part D What is the direction of its acceleration while it is moving upward? Submit ▼ Part E Submit Part E What is...
Please help!
Can't figure out Part E.
PHY 241 University Physics Spring 2019 Chapters 1 8ampamp a https/ Submitted Answers ANSWER1 CChapters 1 &:amp; 2 Item 16 What is the speed at t -52s? Express your answer using two significant figures. z 30 m Constants 1 Periodic Table The acceleration of a particle is given by a Av/t where A v 20 m/s ANSWER 2 1.8 m/s2 At t 0, u = 6.1 m/s and x = 0 Previous Answers...
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