Solving exam problems in physics. Materials for preparing for the Unified State Exam in Physics

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The online USE test in physics, which you can take on the educational portal website, will help you better prepare for the unified state exam. The Unified State Exam is a very important event on which admission to college will depend. And your future profession will depend on it. Therefore, you should approach the issue of preparing for the Unified State Exam responsibly. It is best to use all available means to improve your result in such an important exam.

Various options for preparing for the Unified State Exam

Everyone decides for themselves how to prepare for the Unified State Exam. Some rely entirely on school knowledge. And some manage to show excellent results thanks solely to school preparation. But here the decisive role is played not by a specific school, but by a student who took his classes responsibly and was engaged in self-development. Others resort to the help of tutors, who in a short time can coach the student in solving standard problems from the Unified State Exam. But the choice of a tutor should be taken responsibly, because many consider tutoring as a source of income and do not care about the future of their mentee. Some people enroll in specialized courses to prepare for the Unified State Exam. Here, experienced specialists teach children to cope with various tasks and prepare them not only for the Unified State Exam, but also for entering college. It is best if such courses operate at. Then university professors will teach the child. But there are also independent ways to prepare for the Unified State Exam – online tests.

Online Unified State Exam tests in physics

On the educational portal Uchistut.ru you can take online test tests of the Unified State Exam in physics in order to better prepare for the real Unified State Exam. Training on the Internet will allow you to understand what questions there are on the Unified State Exam. You can also identify your strengths and weaknesses. Since there is no time limit for online practice tests, you can find in textbooks the answer to a problem whose solution is unknown. Constant practice will help reduce stress levels during the real exam. And experts say that more than thirty percent of failures on the Unified State Exam are due precisely to stress and confusion during the Unified State Exam. For a child, this is a very heavy burden, a responsibility that puts a lot of pressure on the student and prevents him from concentrating on the assigned tasks. And the Unified State Exam in physics is considered one of the most difficult, so you need to prepare for it as best as possible. After all, admission to the best technical universities in Moscow depends on the results of the Unified State Exam in physics. And these are very prestigious educational institutions that many people dream of getting into.

Series “Unified State Exam. FIPI - school" was prepared by the developers of control measuring materials (CMM) of the unified state exam.
The collection contains:
30 standard exam options, compiled in accordance with the draft demo version of the KIM Unified State Exam in Physics 2017;
instructions for completing the examination work;
answers to all tasks;
evaluation criteria.
Completing the tasks of standard exam options provides students with the opportunity to independently prepare for the state final certification in the form of the Unified State Exam, as well as to objectively assess the level of their preparation for the exam. Teachers can use standard exam options to organize monitoring of the results of students’ mastery of educational programs of secondary general education and intensive preparation of students for the Unified State Exam.

Examples.
A cube of mass 1 kg rests on a smooth horizontal table, compressed from the sides by springs (see figure). The first spring is compressed by 4 cm, and the second is compressed by 3 cm. The stiffness of the second spring is k 2 = 600 N/m. What is the stiffness of the first spring k 1 ?

The frequency of free vertical harmonic oscillations of a spring pendulum is 4 Hz. What will be the frequency of such oscillations of the pendulum if the stiffness of its spring is increased by 4 times?

In the inertial reference system along the O axis X A body of mass 20 kg is moving. The figure shows a graph of the velocity projection V x of this body from time t. From the list below, select two correct statements and indicate their numbers.
1) The body acceleration module in the time interval from 0 to 20 s is twice as large as the body acceleration module in the time interval from 60 to 80 s.
2) In the time interval from 0 to 10 s, the body moved 20 m.
3) At the moment of time 40 s, the resultant of the forces acting on the body is equal to 0.
4) In the time interval from 80 to 100 s, the body’s momentum decreased by 60 kg m/s.
5) The kinetic energy of the body in the period of time from 10 to 20 s increased by 2 times.

As a result of the transition of an artificial Earth satellite from one circular orbit to another, its centripetal acceleration decreases. How do the radius of the satellite's orbit and its speed in orbit around the Earth change as a result of this transition?
For each quantity, determine the corresponding nature of the change:
1) increases
2) decreases
3) does not change
Write down the selected numbers for each physical quantity in the table. The numbers in the answer may be repeated.

Download the e-book for free in a convenient format, watch and read:
Download the Unified State Exam book, Physics, 30 options, Demidova M.Yu., 2017 - fileskachat.com, fast and free download.

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Unified State Exam 2017 Physics Typical Lukashev test tasks

M.: 2017 - 120 p.

Typical test tasks in physics contain 10 variant sets of tasks, compiled taking into account all the features and requirements of the Unified State Exam in 2017. The purpose of the manual is to provide readers with information about the structure and content of the 2017 test measurement materials in physics, as well as the degree of difficulty of the tasks. The collection contains answers to all test options, as well as solutions to the most difficult problems in all 10 options. In addition, samples of forms used in the Unified State Exam are provided. The team of authors are specialists from the Federal Subject Commission of the Unified State Examination in Physics. The manual is addressed to teachers to prepare students for the physics exam, and to high school students for self-preparation and self-control.

Format: pdf

Size: 4.3 MB

Watch, download: drive.google


CONTENT
Instructions for performing work 4
OPTION 1 9
Part 1 9
Part 2 15
OPTION 2 17
Part 1 17
Part 2 23
OPTION 3 25
Part 1 25
Part 2 31
OPTION 4 34
Part 1 34
Part 2 40
OPTION 5 43
Part 1 43
Part 2 49
OPTION 6 51
Part 1 51
Part 2 57
OPTION 7 59
Part 1 59
Part 2 65
OPTION 8 68
Part 1 68
Part 2 73
OPTION 9 76
Part 1 76
Part 2 82
OPTION 10 85
Part 1 85
Part 2 91
ANSWERS. EXAMINATION ASSESSMENT SYSTEM
WORKS ON PHYSICS 94

To complete rehearsal work in physics, 3 hours 55 minutes (235 minutes) are allotted. The work consists of 2 parts, including 31 tasks.
In tasks 1-4, 8-10, 14, 15, 20, 24-26, the answer is a whole number or a final decimal fraction. Write the number in the answer field in the text of the work, and then transfer it according to the sample below into answer form No. 1. There is no need to write units of measurement of physical quantities.
The answer to tasks 27-31 includes a detailed description of the entire progress of the task. In answer form No. 2, indicate the task number and write down its complete solution.
When making calculations, it is allowed to use a non-programmable calculator.
All Unified State Exam forms are filled out in bright black ink. You can use gel, capillary or fountain pens.
When completing assignments, you can use a draft. Entries in the draft are not taken into account when grading work.
The points you receive for completed tasks are summed up. Try to complete as many tasks as possible and score the most points.

1) UNIFIED STATE EXAMINATION IN PHYSICS IS LASTING 235 min

2) STRUCTURE of CIMs - 2018 and 2019 compared to 2017. Slightly CHANGED: The exam version will consist of two parts and will include 32 tasks. Part 1 will contain 24 short-answer items, including self-report items that require a number, two numbers, or a word, as well as matching and multiple choice items that require answers to be written as a sequence of numbers. Part 2 will contain 8 tasks united by a common type of activity - problem solving.

Of these, 3 tasks with a short answer (25–27) and 5 tasks (28–32), for which you need to provide a detailed answer. The work will include tasks of three difficulty levels. Basic level tasks are included in part 1 of the work (18 tasks, of which 13 tasks with the answer recorded in the form of a number, two numbers or a word, and 5 matching and multiple choice tasks). Advanced-level tasks are distributed between parts 1 and 2 of the examination paper: 5 short-answer tasks in part 1, 3 short-answer tasks and 1 long-answer task in part 2. The last four tasks of part 2 are tasks of a high level of complexity. Part 1 of the examination paper will include two blocks of tasks: the first tests the mastery of the conceptual apparatus of the school physics course, and the second tests the mastery of methodological skills. The first block includes 21 tasks, which are grouped based on thematic affiliation: 7 tasks on mechanics, 5 tasks on MCT and thermodynamics, 6 tasks on electrodynamics and 3 on quantum physics. A new task of a basic level of complexity is the last task of the first part (position 24), timed to coincide with the return of the astronomy course to the school curriculum. The task has a characteristic of the type “choosing 2 judgments out of 5.”

Task 24, like other similar tasks in the examination paper, is scored a maximum of 2 points if both elements of the answer are correct, and 1 point if an error is made in one of the elements. The order in which the numbers are written in the answer does not matter. As a rule, tasks will be contextual in nature, i.e. Some of the data required to complete the task will be presented in the form of a table, diagram or graph.

· In accordance with this task, the subsection “Elements of Astrophysics” of the section “Quantum Physics and Elements of Astrophysics” was added to the codifier, including the following points:

· Solar system: terrestrial planets and giant planets, small bodies of the solar system.

· Modern ideas about the origin and evolution of the Sun and stars. Our galaxy. Other galaxies. Spatial scales of the observable Universe.

· Modern views on the structure and evolution of the Universe.

You can learn more about the structure of KIM-2018 by watching the webinar with the participation of M.Yu. Demidova https://www.youtube.com/watch?v=JXeB6OzLokU or in the document below.

Specification
control measuring materials
for holding the unified state exam in 2017
in PHYSICS

1. Purpose of KIM Unified State Exam

The Unified State Exam (hereinafter referred to as the Unified State Exam) is a form of objective assessment of the quality of training of persons who have mastered educational programs of secondary general education, using tasks of a standardized form (control measurement materials).

The Unified State Examination is conducted in accordance with the Federal Law of December 29, 2012 No. 273-FZ “On Education in the Russian Federation.”

Control measuring materials make it possible to establish the level of mastery by graduates of the Federal component of the state educational standard of secondary (complete) general education in physics, basic and specialized levels.

The results of the unified state exam in physics are recognized by educational organizations of secondary vocational education and educational organizations of higher professional education as the results of entrance tests in physics.

2. Documents defining the content of the Unified State Exam KIM

3. Approaches to selecting content and developing the structure of the Unified State Exam KIM

Each version of the examination paper includes controlled content elements from all sections of the school physics course, while tasks of all taxonomic levels are offered for each section. The most important content elements from the point of view of continuing education in higher educational institutions are controlled in the same version with tasks of different levels of complexity. The number of tasks for a particular section is determined by its content and in proportion to the teaching time allocated for its study in accordance with the approximate physics program. The various plans by which examination options are constructed are built on the principle of content addition so that, in general, all series of options provide diagnostics for the development of all content elements included in the codifier.

The priority when designing a CMM is the need to test the types of activities provided for by the standard (taking into account the limitations in the conditions of mass written testing of students’ knowledge and skills): mastering the conceptual apparatus of a physics course, mastering methodological knowledge, applying knowledge in explaining physical phenomena and solving problems. Mastery of skills in working with information of physical content is tested indirectly by using various methods of presenting information in texts (graphs, tables, diagrams and schematic drawings).

The most important type of activity from the point of view of successful continuation of education at a university is problem solving. Each option includes tasks in all sections of different levels of complexity, allowing you to test the ability to apply physical laws and formulas both in standard educational situations and in non-traditional situations that require the manifestation of a fairly high degree of independence when combining known action algorithms or creating your own plan for completing a task .

The objectivity of checking tasks with a detailed answer is ensured by uniform assessment criteria, the participation of two independent experts evaluating one work, the possibility of appointing a third expert and the presence of an appeal procedure.

The Unified State Examination in Physics is an exam of choice for graduates and is intended for differentiation when entering higher educational institutions. For these purposes, the work includes tasks of three difficulty levels. Completing tasks at a basic level of complexity allows you to assess the level of mastery of the most significant content elements of a high school physics course and mastery of the most important types of activities.

Among the tasks of the basic level, tasks are distinguished whose content corresponds to the standard of the basic level. The minimum number of Unified State Exam points in physics, confirming that a graduate has mastered a secondary (full) general education program in physics, is established based on the requirements for mastering the basic level standard. The use of tasks of increased and high levels of complexity in the examination work allows us to assess the degree of preparedness of the student to continue his education at the university.

4. Structure of KIM Unified State Exam

Each version of the examination paper consists of 2 parts and includes 32 tasks, differing in form and level of complexity (Table 1).

Part 1 contains 24 tasks, of which 9 tasks with choosing and recording the number of the correct answer and 15 tasks with a short answer, including tasks with independently recording the answer in the form of a number, as well as matching and multiple choice tasks in which answers are required write as a sequence of numbers.

Part 2 contains 8 tasks united by a common activity - problem solving. Of these, 3 tasks with a short answer (25-27) and 5 tasks (28-32), for which you need to provide a detailed answer.

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