Prokofiev V.L - solution to the entire option 09 in physics KR1

Problem 1.9: A material point moves in a circle of radius 1 meter according to the equation s=8t - 0.2t3. It is necessary to find the speed, tangential, normal and total acceleration at a time of 3 seconds.

Problem 1.19: It is necessary to determine the speed of movement of the body at which the relativistic reduction in length will be 25%.

Problem 1.29: A hydrogen molecule moves at a speed of 400 meters per second and approaches the wall of a container at an angle of 60°, after which it bounces off elastically. It is necessary to determine the impulse received by the wall. Take the mass of a hydrogen molecule to be 3•10-27 kilograms.

Problem 1.39: It is necessary to find the momentum, total and kinetic energy of a neutron moving at a speed of 0.6 the speed of light.

Problem 1.49: It is necessary to determine the maximum temperature to which a sealed vessel with a volume of 5 liters containing 36 grams of water can be heated without bursting, given that the walls of the vessel can withstand a pressure of 5•106 Pascal.

Problem 1.59: The coefficient of internal friction of oxygen under normal conditions is known - 1.9•10-4 kilograms per meter per second. It is necessary to determine the thermal conductivity coefficient of oxygen.

Problem 1.69: Nitrogen weighing 20 grams received 3116 Joules of heat during isobaric heating. It is necessary to determine how the temperature and internal energy of the gas have changed.

Problem 1.79: It is necessary to determine the change in entropy when mixing 2 kilograms of water at a temperature of 300 Kelvin and 4 kilograms of water at a temperature of 370 Kelvin.

Prokofiev V.L - solution to the entire option 09 in physics KR1 - this is an educational manual containing solutions to all problems of option 09 in physics KR1, which can be given to students as part of a physics course. The manual provides detailed and step-by-step solutions to each problem, which will allow students to better understand the material and prepare for the exam. The problems cover a variety of topics including mechanics, thermodynamics and electrodynamics. In addition, the manual may provide theoretical explanations and additional materials that will help students better understand physical phenomena and laws.

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Prokofiev V.L - solution to the entire option 09 in physics KR1 - this is a collection of solutions to problems in physics, including 7 problems of varying complexity. This collection presents solutions to problems 1.9, 1.19, 1.29, 1.39, 1.49, 1.59 and 1.69 from option 09 in physics KR1. The solutions to the problems were carried out by the author - V.L. Prokofiev.

Problems include various physics topics such as mechanics, thermodynamics and electricity. Solutions to problems contain detailed calculations and answers that will help students and schoolchildren better understand the material and prepare for exams and testing in physics.

In particular, problem 1.9 concerns the motion of a material point in a circle, problem 1.19 - relativistic contraction of length, problem 1.29 - elastic collision of a hydrogen molecule with the wall of a vessel, problem 1.39 - momentum and kinetic energy of a neutron, problem 1.49 - pressure inside a vessel with water when heated, problem 1.59 - the thermal conductivity coefficient of oxygen, and problem 1.69 - changes in temperature and internal energy of nitrogen during isobaric heating.

Thus, the collection of decisions of V.L. Prokofiev will be useful for students and schoolchildren studying physics, as well as for teachers who can use it as additional material for testing knowledge and preparing for exams.

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