A lump of plasticine weighing 200 g is thrown at an angle of 30° and at a speed of 16 m/s towards the 20 m distant concrete facade of the apartment block so that the lump adheres to the facade for a short time and then falls to the floor. How big is the mechanical energy of the lump just before the collision and how big just after it? How much of the mechanical energy has been converted into other forms of energy (heat)?

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A: To calculate the work done by the gas on the bullet, we need to integrate the force over the…

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A: length (L) = 1.07 m mass (m) = 4.92 kg initial speed = 2.88 msenergy lost = 1 J

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A: Given: Food energy can be viewed as molecular potential energy is discussed below.

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A: Given that-Mass of cart 1, m= 4 kgInitial velocity of cart 1, u1= 5 m/sMass of cart 2, M= 6…

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A: The kinetic energy can be transferred to an object by spinning it or moving it. The PE can be…

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Q: A 1600 kg car steadily accelerates from rest to 60 mi/hr over a 2.8 second time span. How much work…

A: Given:mass of car, m = 1600 kgfinal velocity, vf = 60 mi/hr = 26.816 m/s

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A: Given,  radius of bowl= 24 cm or 0.24 m Mass of flake= 4.5 gram mass of flake in second case= 4.5*6=…

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Q: A 78.0-kg sky diver jumped out of an airplane at an altitude of 0.900 km. She opened her parachute…

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Q: An object with a large surface area has a mass of 20kg, and falls freely under gravity from a height…

A: Given: The mass of the object is 20 kg. The initial height of the object from the ground is 25 m.…

Q: An assistant for a football team carries a 26.0 kg cooler of water from the top row of the stadium,…

A: We kno that work done  W=Fdcosθ a) F=26*9.81=255.06  angle θ=180 Wok done by the assistant…

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Q: Can we determine energy by how it looks ? True or false

A: To determine, Can we determine energy by how it looks. Is it True or false.

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A: Write the work-energy equation.…

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A: Whether the total amount of energy at the top is equal to the total amount of energy at the bottom…

Q: Problem 12:  When water flows through river rapids or over a waterfall, it experiences a decrease in…

A: Height of waterfall (h) = 41 m  Specific heat of water (c) = 4.19 × 103 J / kg ° C

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A: Mass of the system: m=15 lbm=1532=0.469 slugApplied force, F=8 lbfDisplacement along the inclined…

Q: A 75-g bullet is fired from a rifle having a barrel 0.0660 m long. Choose the origin to be at the…

A: Given:- m=75 kg  x=0.6 m  F(x)=16000+10000x-24000x2, x in the meter.  Find:- A) Determine the work…

Q: During running, you lost 4.0×104 J of heat, and your internal energy also decreased by 1.6×105 J.…

A: Change in Internal energy, ∆U=-1.6×105J Heat lost, Q=-4.0×104J

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A: Given: The mass of the ball is m=50 g, The height of the ball above the surface of the Earth is…

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A: Physicists refer to the energy content of a body as its "internal energy" while they call the…

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A: Mass, m = 3.2 g Radius, r = h = 19 cm = 0.19 m Initial speed, vi = 0.51 m/s

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Q: A typical coal-fired power plant burns 340 metric tons of coal every hour to generate 2.5 × 106 MJ…

A: The efficiency of the power plant can be given by e=WoutQh×100%

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.