explain why the phrase " the refrigerator door must be  kept close because coldness (or cold air) might escape"  is incorrect thermodynamically or considered incorrect in terms of thermodynamics.

Q: C2 C1 4 uF 1 uF C3 3 uF A- -B C4 2 uF C5 2 uf Assuming the dielecetrie of each capacitor is air and ...

A: Potential difference=30v

Q: A 5-m ladder leans against a wall. Assume the bottom slides away from the wall at a rate of 0.9 m/s....

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Q: Problem 1: A spherical conductor is known to have a radius and a total charge of 10 cm and 20uC. If ...

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Q: 0.4 m 2.) If block B moves downward with an A acceleration of 0.2 m/s/s, find the acceleration of bl...

A: Acceleration of block B = 0.2 m/s/s Let the acceleration of block A is aA.  if we assume the both bl...

Q: ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 9....

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Q: Calculate the actual work done on the 200 g mass using W = mgh.  Be careful to use only the change i...

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Q: Part B A clever engineer designs a "sprong" that obeys the force law F, = -q(x – x.)3, where a, is t...

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Q: An ant on a picnic table travels 30 cm eastward, then 25 cm northward, and finally 15 cm westward. W...

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Q: Problem 1: A spherical conductor is known to have a radius and a total charge of 10 cm and 20uC. If ...

A: Electric potential due to any charge(Q) on spherical conductor at any distance (r)  V= KQ/r When r&g...

Q: What is the acceleration of the object of 30kg a force 100 N act on a object and the friction force ...

A: As the body moves along the direction of applied force, the frictional force will act on the opposit...

Q: oblem 1: A spherical conductor is known to have a radius and a total charge of 10 cm and 20uC. If po...

A: Electric potential due to potential charge V = kq/R Charge stays outer surface of conductor.

Q: Problem 1: A spherical conductor is known to have a radius and a total charge of 10 cm and 20uC. If ...

A: Given:  Charge on the conductor = 20 micro-coulombs Radius of conductor = 10 cm  

Q: In the Marvel comic series X-Men, Colossus would sometimes throw Wolverine toward an enemy d = 2.11 ...

A: Given: The intial velocity of the Wolverine is 20.4 m/s. The angle of projection is 28.1o. The initi...

Q: A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of ...

A: Initial velocity of the ball u=8.9 m/s which is thrown at an angle 19o below the horizontal and it t...

Q: All answers must be expressed in Engineering Notation A spherical conductor is known to have a radiu...

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Q: Starting from rest, a wheel reaches an angular speed of 17.0 rad/s in 4.85 s. (a) What is the magnit...

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Q: A high jumper, falling at 4.0 m/s, lands on a foam pit and comes to rest, compressing the pit 0.40 m...

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Q: duration of a photographic flash is related to an RC time constant, which is 0.115 μs during the fla...

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Q: It is desire to sight from hill A (elev = 3025.62 m) to hill B (3048.91 m) 7 km away. Hill C (elev =...

A: Given:Height of hill A, hA = 3025.62 mheight  of hill B, hB  = 3048.91 mheight of hill C, hC = 3039....

Q: A 518 × 1012 Hz wave is traveling through GLASS. What will be the frequency of the wave if it is ref...

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Q: the tensions F, Fp, and F in the three chains? T Fn FT = F2 = F3 =

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Q: Problem 2: Given this network of capacitors: C2 C1 4 uF 1 uF C3 3 uF A- C4 2 uF C5 2 uF Assuming the...

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Q: A +10 micro coulomb point charge is 25cm away from a-20 micro coulomb point charge. Calculate the ma...

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Q: uestion 3. 2,) are the coordinates of the Centre of Mass for the lamina with mass per unit area 2 an...

A: Given data: The bounding equations are, y=2+5xx=7 The mass per unit area is ρ=2.

Q: To take off from the ground, an airplane must reach a sufficiently high speed. The velocity required...

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Q: A wheel of inner radius r, = 13.0 cm and outer radius r, = 35.0 cm shown in the figure below is free...

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Q: Two bumper cars at the county fair are sliding toward one another (see figure below). Initially, bum...

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Q: Same capacitors in number 1 connected in a parallel. If the combinedc harge in the network is 50 μC,...

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Q: (3-4) A circular coil of wire 0.075 m in radius, having 40 turns, lies in a horizontal plane. It car...

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Q: A cab driver heads south with a steady speed of v, = 20.0 m/s for t, = 3.00 min, then makes a right ...

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Q: Р (Рa) 800 B 600 400 A C 200 2 8 10 v (m) 4 6 4. One mole of an ideal gas is taken through a closed ...

A: One mole of an ideal gas is taken through the cyclic process A-B-C-A. Process AB occurs at a constan...

Q: A rotating object's angular position is given by 0(t) = (1.20t2 8.15t + 2.55) rad, where t is measur...

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Q: Three capacitors are connected in parallel and have the following voltage ratings: C1 = 32 uF with 8...

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Q: Q6: Calculate the distance travelled by a bike between three places: 1- It was driven from rest at t...

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Q: 100 calories while walking a mile at a fairly brisk pace. How many miles per day would an average pe...

A: Brick pace means 100 steps per minute or 3 to 3.5 miles per hour Let consider 1 miles per hour perso...

Q: If 10% of a radioactive material decays in 5 days, then the amount of the original material left aft...

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Q: Q4:-What are the physical meaning of the following terms? a. Corresponding principle b. Principle qu...

A: (a) The correspondence principle addresses the connection between classical and quantum physics. The...

Q: *Problem 1.3 Consider the gaussian distribution p(x) = Ae¯ e-^(x-a}² where A, a, and A are positive ...

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Q: Some people are able to spin a basketball on the tip of a finger. It is often done by balancing the ...

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Q: It takes a golfer a total of three strokes to put the ball in the hole. The displacements of the thr...

A: Magnitude = 4.51 m and direction = 81.08°

Q: aight wire is placed below the compass. A large current passed flows upward the conductor. Where sho...

A: Magnetic field due to straight wire B = μ₀I/2πr 

Q: and B are 15 cm and 5 cm from the center of the conductor, respectively. If a test charge, q = 25mC,...

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Q: Two springs and two masses are attached in a straight line on a horizontal frictionless surface as u...

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Q: Suppose that the charged particle a is at rest.   (REFER TO THE ATTACHED PICTURE)   Answer the f...

A: 1. Let's assume the positive charge is +Q and distance between charge +Q and -a is d. So potential e...

Q: A bag of wheat weight 250 70 whot height 'should it te 5iaised so that 8oterdia.l energis 9600 J 7ok...

A: Given data :- mass m = 250 kg Potential energy U = 9600 J g = 9.8 m/s2

Q: A car is standing 200 m behind a bus, which is also at rest. The two start moving at the same instan...

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Q: A = 3i + j - k, B = -i + 2j + 5k, C = 2j – 3k. Find: Ĉ x (2A - )

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Q: Please find it charges, voltage to each of its resistor, and charge to each nodes.

A: In a circuit with resistances, we calculate the currents flowing through them. In the case of capaci...

Q: Two forces F, = (55.76î – 12.93ĵ) N and F, = (27.41î - 72.94ĵ)N are exerted on a particle. The parti...

A: The mass of the particle is m=10.14 kg The force acting on the particles, F→1=55.76i^-12.93j^ N The ...

Q: 1-2. Vector Addition and Subtraction using Components. Given: Ã = 4 units B = 6 units angle between ...

A:

First law of Thermodynamics

The word thermodynamics consists of two words: thermo- and dynamics. Dynamics means the study of motion. The field of thermodynamics is all about the study of the movement of heat. In a more meaningful way, it is stated as the study of the transfer of energy. Energy transfer is something that we encounter in day-to-day life. Automobiles, chemical reactions, refrigerators, and power generators work on the basis of thermodynamic principles.