Determine the rate of change of heat rejection from a reversible heat engine operating between a hot reservoir at 900 K and a cold reservoir at 400 K if the engine produces a power output of 400 kW.

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Q: A positively charged particle of mass 8.59 x 108 kg is traveling due east with a speed of 61.2 m/s a...

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Q: 4. A15 gram gun fires bullet at a muzzle velocity of 600 m/s. What is the recoil velocity of the gun...

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Q: 7) When water initially at a temperature T1 is mixed with the same amount of water at a different te...

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Q: 34. The protein dynein powers the flagella that propel some unicellular organisms. Biophysicists hav...

A:   Given Max force  F                         = 1pN     = 10-12 N Amplitude of oscillation A = 15 nm ...

Q: The planet Jupiter rotates every 9.9 hours and has a diameter of 88 846 miles. If you’re standing on...

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Q: Rod- Pithball- rod pithball Rod- Pithball- rod pithball 10.

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Q: A Ford Territory and a Montero Sport are traveling in the same direction at 60.0 kph on a straight h...

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Q: Describe the principle of the seismometer.

A: Seismometer is ground-motion detection sensor which fixed in seismograph. It is coupled with a recor...

Q: Capt. Bo Wing left his house to drive to the gym 12km East of his house. After working out, he went ...

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Q: A small spherical insulator of mass 6.82 x 102 kg and charge +0.600 µC is hung by a thin wire of neg...

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Q: A hot air balloon was rising at a rate of 506 feet per minute (ft/min). Use the following facts to c...

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Q: One electron collides elastically with a second electron initially at rest. After the collision, the...

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Q: Calculate the wavelength of a photon that has a frequency of 3.5 x 101 Hz. Convert your answer into ...

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Q: wo persons, weighing 784 N each, carry an excess charge of 1.0 Coulomb, one positive and one negativ...

A: Force between two point charge  F = kq₁q₂/r2 

Q: (a) For 4.84 moles of a monatomic ideal gas taken through the cycle in the figure, where V1 = 4.00V0...

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Q: Three equal charges (Q1, Q2, & Q3) of +5x10^-6 C (Micro-Coulomb) form the vertices of a triangle tha...

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Q: The figure shows a reversible cycle through which 1.09 mol of a monatomic ideal gas is taken. Assume...

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Q: The balloon becomes positive because you are scraping protons off the jacket and onto the balloon. T...

A: Concept1) Charging an object:- An object gets either positively or negatively charged when rubbed wi...

Q: Archimedes: What forces are acting on an object when it is placed in a fluid? a) Its weight due to g...

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Q: SOlVE THE FOtio WING PROB LEMS: 2) A STEEL BAII DROPpED FROM A TOWER STRIKES THE GROUND in 3 See FIH...

A: Part (2): Given: The initial velocity of the ball is 0 m/s. The time taken by the ball to reach the ...

Q: A particle is observed to start at rest and accelerates at a= 30 +2t where t is in seconds, until it...

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Q: 4. An LRC series circuit consisting of an inductor L = 10 mH , a resistor R = 5.5 O and a capacitor ...

A: Given: The inductance of the circuit is 10 mH. The resistance of the circuit is 5.5 Ohm. The capacit...

Q: SOLVE AREA METHOD. NOT BY FORMULA METHOD THEN PLOT IT AND GET THE COORDINATE PER 1 SECOND. a) Dete...

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Q: 1. Given: Vector D, with horizontal and vertical components: 20 in and 30 in, respectively. Vector D...

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Q: Which of the following v,-t graphs best matches the motion shown in the motion diagram? A. В. C. D. ...

A: vx=∆x∆t     ...(1)   From the figure we can see that between two consecutive dots ∆x is gradually d...

Q: The Deligne Dam on the Cayley River is built so that the wall facing the water is shaped like the re...

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Q: In any charging process what happens to the charge? * O created O transferred O destroyed O none of ...

A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,...

Q: A car starts from rest, and accelerates at a uniform rate to a velocity of 40 m/s in 15 secs. If the...

A: Given  initial velocity of car(vi)=0 velocity after t=15 s , v(t=15)=40 m/s radius of circular track...

Q: What is hamiltonian equation

A: Given data: Hamiltonian equation.

Q: 1. A stationary ambulance truck emits a frequency of 1300HZ. Calculate the frequency detected by the...

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Q: 2. Consider a situation where a source is emitting a painfully high frequency sound and you want to ...

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Q: 2. A 1.5-kg ball moving at 2.0 m/s to the right collides head on with a 1.0-kg ball moving at 3.0 mi...

A: 2) Write the expression for the velocity of the first ball and substitute the required values.

Q: In a lab activity, forces A and B were set on the force table. A = 0.10 N at 0 degrees and B = 0.10 ...

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Q: A square plane, whose sides measure 2m each, is placed parallel with the direction of the electric f...

A: Express the relation for the electric flux through the plane. ϕE=EAcosθ ------(1) Here, ϕE is the el...

Q: 1) A WEIGHTIS DROPPED FROM A TOWER 640fH hign, In how many seconds and With what tveļoaty will.it' h...

A: Part (1): Given:The height of the tower is 640 ft. The initial velocity of the object is 0 ft/s.

Q: Shown below is a body of mass 5.0 kg under the influence of the forces FA, FB and mg. If the body ac...

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Q: 3. A charged cork ball of mass I 1.00 g is suspended on a light| string in the presence of a uni- fo...

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Q: What are the workings of a selenium photocopier?

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Q: 13. Find the power of the man who pushes the box 10m with a force of 25N in a 7seconds. a.) 40 Watts...

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Q: A spring of negligible mass with a spring constant of 2.0 x 102 newtons per meter is stretched 0.20 ...

A: Given data:   Spring constant (k) = 2.0×102 N/m Stretch in spring (x) = 0.20 m Required: Potential E...

Q: 1. how the electrostatic force between two particles changes with the sign of the charges?

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Q: Consider two positive charges located on the y - axis. Let Q = 4.0 µC, and a = 0.07 m. Find the elec...

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Q: A spaceship leaves Earth traveling at 0.61c. A small probe ship leaves the first at a speed of 0.87c...

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Q: Consider a situation where a source is emitting a painfully high frequency sound and you want to red...

A: Given:  Frequency emitted by source = f New expected frequency is p times f where p is between 0 and...

Q: Which of the following describes an oscillating system? A.The relationship of period and frequency i...

A: Here we will discuss the oscillating system.

Q: 3 Electric Force has standard units of Newtons. Electric Flux has SI units of ___________. Select ...

A: Here we have to fill the unit of Electric flux

Q: Calculate the acceleration of the 2000 kg twin engine aircraft just before takeoff when the thrust o...

A: mass (m) = 2000 kg thrust of engines = 1100 N   

Q: A 8.00 kg block of ice, released from rest at the top of a 1.50-m-long frictionless ramp, slides dow...

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