A Carnot engine operates between 235°C and 129°C, absorbing 3.53 x 104 J per cycle at the higher temperature. (a) What is the efficiency of the engine? (b) How much work per cycle is this engine capable of performing? (a) Number i Units This answer has no units (b) Number i Units
Q: Find the resultant and direction of the following forces using component method; F 18 Ibs N68°E, F2=...
A:
Q: A glacier in Republica was observed to advance (h)5______ inches in a (i)____71_______ minute period...
A: Given, Glacier advances = 5 inches / 71 minutes. to find glacier advances(in feet) in 1 year = ? ...
Q: What is the electric flux $ through each of the six faces of the cube? Use co for the permittivity o...
A: Given a point charge Q and sides of length is L We have to find the electric flux through the 6 fac...
Q: The resultant of the three forces shown below is a counterclockwise couple of magnitude 200N-m. Calc...
A: Given, The resultant of the three force shown, Couple of the forces, M = 200 N.m
Q: Find the resultant and direction of the following forces using component method; A 10 kg weight is o...
A:
Q: Two jet planes travelling towards each other took off at the same time from two airports located 480...
A: Distance between two air port = 4800km Let the speed of plane 1 be =x Latest speed of plane 2 be= y ...
Q: Calculate the uniform acceleration of a car which slows down from a speed of 60m/s and comes to rest...
A: Let initial velocity u m/s time taken t s uniform acceleration is a m/s²
Q: 1. A 50g weight is suspended from two cords. One cord exerts a force of 30g and makes an angle of 75...
A: Given Weight ,W = 50g F1 = 30g F2 = F g
Q: Shaw is riding his bike when he suddenly hit his brakes causing him to slow down at a rate of -2.75m...
A: Retardation of Shaw bike= -2.75m/s2 Final velocity = 0 Time t= 3.27
Q: Two large plates, one negatively charged and one positively charged is separated by a distance r. Bo...
A:
Q: Solve for the distant planet, Uhkbarhr has a net electric flux of –4.65✕1018 Nm²/C. What will be the...
A: We have given electric flux of –4.65✕10^18 Nm²/C And we have to find What will be the total electri...
Q: Replace the couple and force shown by a single force F applied at a point D. Locate D by determining...
A: In this question we have to locate D by determining the distance b. Please give positive feedback if...
Q: 6. What is the net electric field Ēnet=E1+E2 (in Cartesian Coordinates) at the point (4.5, 0) m?
A:
Q: Val's whole-house central air conditioner uses 2,500 watts when running. Val runs the AC 7 hours per...
A: Given data: Power (P) = 2500 W = 2.500 kW Daily Uses = 7 hours/day Number of days in a month = 30 ...
Q: Determine kinetic energy in ball having mass 5 kg moving with velocity 10 m/s
A:
Q: A train travelled 440 meters in 1 minute how many km an hour was it traveling
A: Train travelled =440m Time taken by train to travel for 40 m =1min
Q: During a 5s time interval,the runner's position changes from x1=70m to x2 =50mWhat is the runner's a...
A:
Q: What is the electric flux for the following set of variables? a.) E = 9.5 x 1013 N/C A = ...
A: Given data: Electric field (E) = 9.5 x 1013 N/C Area (A) = 1.6 x 10-5 m2 Angle (θ) = 75° Required: ...
Q: 1. Two children at rest push off from each other in a swimming pool. One with a mass of 50 kg moves ...
A:
Q: An outdoor concert speaker emits sound at 125 dB, as measured 1.00 meter away. How far away do you...
A: Given, β1 = 125 dBR1 = 1 mβ2 = 85 dBR2 = ?
Q: 27 Friction In this section, you learned about static and kinetic friction. How are these two types ...
A:
Q: 4. A block of mass m accelerates up a slope that has friction. a. Draw a free-body diagram for the b...
A:
Q: Prof. K. likes snowboarding at Mt. Rose and always tries to be the first one on the mountain on powd...
A:
Q: A rocket has been launched at an initial velocity of 24 m/s at an angle of 60° above the horizon. It...
A:
Q: Part A The field just outside a 3.70 cm-radius metal ball is 4.25x102 N/C and points toward the ball...
A: PART A Given Electric field just outside the ball = 4.25 x 102 N/C Radius of the ball (r) = 3.70 cm ...
Q: In the diagram below, a child compresses the spring in a pop-up toy 0.020 meter. 0.020 m Uncompresse...
A: Given data: Spring constant (k) = 340 N/m Comparison in spring (x) = 0.020 m Required: Elastic poten...
Q: A person walks 4 meter east,then walks 3 meters north.Determine distance and displacement.
A:
Q: 7) When water initially at a temperature T1 is mixed with the same amount of water at a different te...
A:
Q: where would an image 1 14.0 cm high pen form it is placed 30.0 cm in front of a convex mirror ? The ...
A: Height of object = 114cm Distance of object = 30cm Focal length of the mirror = 30 cm
Q: The acceleration of a car is given by a(t) = A – Bt + Ct² , where A = 1.0 n 2.0 m/s*. The car is at ...
A: The acceleration of the car is given as a function of time a(t) = A -Bt +Ct2 where A = 1.0 m/s2, B...
Q: rticles of charge – q are arranged symmetrically about the y axis; each produces an electric field a...
A: We know that according to the given two charges -q is arranged symmetrically about the y axis. which...
Q: A defibrillator sends a 6.75 A current through the chest of a patient by applying a 9500 V voltage a...
A: Given data: Current (I) = 6.75 A Voltage (V) = 9500 V Required: The resistance (R) in kΩ
Q: Determine kinetic energy in ball having mass 5 kg moving with velocity 10 m/s
A: Given: Mass= 5 kg Velocity= 10 m/s
Q: Determine kinetic energy in ball having mass 5 kg moving with velocity 10 m/s
A:
Q: A kind of vector that is required to occupy a unique position in space. A. Fixed B. Free C. Sliding ...
A:
Q: 1. A 3 kg ball moving to the right on a frictionless table at 5 m/s makes a head on collision with a...
A: Given a 3kg ball moving with velocity Va =5m/s and the another ball whose mass is also same 3kg movi...
Q: 2.) Consider the system below to be in equilibrium (net force = 0). Calculate the %3D tension forces...
A:
Q: A plane flies with a velocity of 235m/s making an angle of 48 degrees, North of East. b. Find the h...
A: Given: The speed of the plane is 48o North of East.
Q: In the circuit below the voltage supplied by the battery is 24.0 V and the resistance of the resisto...
A:
Q: rges q1, q2, and q3 are situated at three corners of a rectangle as shown in the diagram below. Her...
A: We know that the formula of the electric potential energy is given as U= kQ1Q2r where Q1 and Q2 are...
Q: An aluminum nail has an excess charge of 3.1 µC (3.1 × 10¬6 C). How many electrons must be added to ...
A: In this question we have to find the number of electrons required to make the nail electrically neut...
Q: Determine kinetic energy in ball having mass 5 kg moving with velocity 10 m/s
A: Data provided: A ball Mass (m) = 5 kg Velocity (v) = 10 m/s Needed: Kinetic Energy
Q: %3D
A:
Q: Activity #1 Take the TORQUE challenge 35 cm 5 cm 18 cm 2 cm 19 cm 6 cm m = 0.6 kg What is the mass o...
A: Given that:- Mass of letter C=m=0.6kg
Q: The sides of a right triangle are BC = 3, AC = 4, and AB = 5 cm. If + 10 statC charges are at the co...
A:
Q: Shown below there are three charges sitting at the corners of an equilateral triangle. The charges a...
A: Given that:- QA=+3.87mC, QB=-4.56mC, QC=+2.72mC
Q: An experimental plane just after takeoff climbs with a speed of 500 km/h at an angle of 37 degrees w...
A: Given data: Speed (v) = 500 km/h Angle (θ) = 37°, with the horizontal Required: Vertical and horizo...
Q: current of I = 7.3 A is passing through a conductor with cross sectional area A = 6.5 × 10-4 m2. The...
A:
Q: Say that you put a negatively charged insulating rod close to a neutral conductor. A.) Draw a diagr...
A:
Please help me
Step by step
Solved in 2 steps with 2 images
- A Carnot engine operates between reservoirs at 600 and 300 K. If the engine absorbs 100 J per cycle at the hot reservoir, what is its work output per cycle?A refrigerator has a coefficient of performance of 3.0. (a) If it requires 200 J of work per cycle, how much heat per cycle does it remove the cold reservoir? (b) How much cycle is discarded to the hot reservoir?Check Your Understanding A Carnot refrigerator operates between two heat reservoirs whose temperatures 0 and 25 . (a) What is the coefficient of performance of the refrigerator? (b) If 200 J of work done on the working substance cycle, how heat per cycle is from cold reservoir? (c) How much heat cycle is discarded to the hot reservoir?
- Two moles of a monatomic ideal gas such as oxygen is compressed adiabatically and reversibly from a state (3 atm, 5 L) to a state with a pressure of 4 atm. (a) Find the volume and temperature of the final state. (b) Find the temperature of the initial state. (c) Find work done by the gas in the process. (d) Find the change in internal energy in the process. Assume Cv=5R and Cp=Cv+R for the diatomic ideal gas in the conditions given.Consider an ideal gas Joule cycle, also called the Brayton cycle, shown below. Find the formula for efficiency of the engine using this cycle in terms of P1 , P2 and .In an adiabatic process, oxygen gas in a container is compressed along a path that can be described by the following pressure in atm as a function of volume V, with V0=1L:P=(3.0atm)(V/V)1.2 . The initial and final volumes during the process were 2 L and 1.5 L, respectively. Find the amount of work done on the gas.
- A Carnot engine is used to measure the temperature of a heat reservoir. The engine operates between the heat reservoir and a reservoir consisting of water at its triple point. (a) If 400 J per cycle are removed from the heat reservoir while 200 J per cycle are deposited in the triple-point reservoir, what is the temperature of the heat reservoir? (b) If 400 J per cycle are removed from the triple-point reservoir while 200 J per cycle are deposited in the heat reservoir, what is the temperature of the heat reservoir?An engineer must design a refrigerator that does 300 J of work per cycle to extract 2100 J of heat per cycle from a freezer whose temperature is 10 . What is the maximum air temperature for which this condition can be met? Is this a reasonable condition to impose on the design?A Carnot cycle working between 100 and 30 is used to drive a refrigerator between 10 and 30 . How much energy must the Carnot engine produce per second so that the refrigerator is able to discard 10 J of energy per second?
- If a refrigerator discards 80 J of heat per cycle and its coefficient of performance is 6.0, what are (a) the quantity off heat it removes per cycle from a cold reservoir and (b) the amount of work per cycle required for its operation?The gasoline internal combustion engine operates in a cycle consisting of six parts. Four of these parts involve, among other things, friction, heat exchange through finite temperature differences, and accelerations of the piston; it is irreversible. Nevertheless, it is represented by the ideal reversible Otto cycle, which is illustrated below. The working substance of the cycle is assumed to be air. The six steps of the Otto cycle ale as follows: i. Isobaric intake stroke (OA). A mixture of gasoline and air is drawn into the combustion chamber at atmospheric pressure P0 as the piston expands, increasing the volume of the cylinder from zero to VA . ii. Adiabatic compression stroke (AB). The temperature of the mixture rises as the piston compresses it adiabatically from a volume VA to VB . iii. Ignition at constant volume (BC). The mixture is ignited by a spark. The combustion happens so fast that there is essentially no motion of the piston. During this process, the added heat Q1 causes the pressure to increase from pB to pc at the constant volume VB(=Vc) . iv. Adiabatic expansion (CD). The heated mixture of gasoline and air expands against the piston, increasing the volume from VC to VD . This is called the power stroke, as it is the part of the cycle that delivers most of the power to the crankshaft. v. Constant-volume exhaust (DA). When the exhaust valve opens, some of the combustion products escape. There is almost no movement of the piston during this part of the cycle, so the volume remains constant at VA(=VD) . Most of the available energy is lost here, as represented by the heat exhaust Q2 . vi. Isobaric compression (AO). The exhaust valve remains open, and the compression from VA to zero drives out the remaining combustion products. (a). Using (i)e=W/Q1; (ii)w=Q1Q2; and (iii)Q1=nCv(TCTB),Q2=nCv(TDTA), Show that e=1TDTATCTB. (b). Use the fact that steps (ii) and (iv) are adiabatic to show that e=11r1 where r=VA/VB . The quantity r is called the compression ratio of the engine. (c) In practice, r is kept less than around 7. For larger values, the gasoline-air mixture is compressed to temperatures so high that it explodes before the finely timed spark is delivered. This preignition causes engine knock and loss of power. Show that for r=6 and =1.4 (the value for air), e=0.51 , or an efficiency of 51%. Because of the many irreversible processes, an actual internal combustion engine has an efficiency much less than this ideal value. A typical efficiency for a tuned engine is about 25% to 30%.A monatomic ideal gas undergoes a quasi-static process that is described by the function pV=p1+3(vv1) , where the stating state is (p1,v1) and the final state (p2,v2) . Assume the system consists of n moles of the gas in a container that can exchange heat with the environment and whose volume can change freely. (a) Evaluate the work done by the gas during the change in the state. (b) Find the change in internal energy of the gas. (c) Find the heat input to the gas during the change. (d) What ale initial and final temperatures?