Unified State Examinations GIA. Preparing for the Unified State Exam in Physics: examples, solutions, explanations Early Unified State Exam physics teaching aids

20.10.2021 Hypertension

As last year, in 2017 there are two “streams” of the Unified State Examination – an early period (it takes place in mid-spring) and the main one, traditionally starting at the end school year, the last days of May. The official draft Unified State Exam schedule “specifies” all the dates for taking exams in all subjects in both of these periods - including additional reserve days provided for those who, for good reason (illness, coincidence of exam dates, etc.) were unable to pass the Unified State Exam within the specified time frame.

Schedule of early period for passing the Unified State Exam – 2017

In 2017, the early “wave” of the Unified State Exam will start earlier than usual. If last year the peak of the spring exam period occurred in the last week of March, then this season the spring break period will be free from the Unified State Examination.


The main dates of the early period are from March 14 to March 24. Thus, by the beginning of the spring school holidays, many “early-term students” will already have time to pass the tests. And this may turn out to be convenient: among graduates who have the right to take the Unified State Exam in early wave- guys who in May will have to participate in Russian or international competitions and competitions, and during spring break they often go to sports training camps, specialized shifts in camps, etc. Shifting exams to more early dates will allow them to use the latter “to the fullest.”


Additional (reserve) days early period of the Unified State Exam 2017 will be held from April 3 to April 7. At the same time, many will probably have to write exams on reserve dates: if in the last year’s schedule no more than two subjects were taken on the same day, then in 2017 most elective exams are grouped “in threes”.


Separate days are allocated only for three subjects: the Russian language exam, which is mandatory for graduates and all future applicants, as well as mathematics and the oral part of the exam in foreign languages. At the same time, this year “early-term” students will take the “speaking” part before the written part.


The March exams are planned to be distributed by date as follows:



  • March 14th(Tuesday) – exam in mathematics (both basic and specialized level);


  • March 16(Thursday) – chemistry, history, computer science;


  • 18th of March(Saturday) – Unified State Exam in foreign languages ​​(oral part of the exam);


  • 20th of March(Monday) – Russian language exam;


  • March 22(Wednesday) – biology, physics, foreign languages ​​(written exam);


  • March 24(Friday) - Unified State Examination, literature and social studies.

There is a nine-day pause between the main and reserve days of the early period. All additional tests for “reservists” will take place over three days:



  • April 3(Monday) – chemistry, literature, computer science, foreign (speaking);


  • 5th of April(Wednesday) – foreign (written), geography, physics, biology, social studies;


  • April 7(Friday) – Russian language, basic and.

As a rule, the bulk of those taking the Unified State Examination ahead of schedule are graduates of previous years, as well as graduates of secondary specialized educational institutions (in colleges and vocational lyceums, the secondary school program is usually “passed” in the first year of study). In addition, school graduates who will be absent for valid reasons during the main period of taking the Unified State Exam (for example, to participate in Russian or international competitions or to be treated in a sanatorium) or who intend to continue their education outside Russia can “shoot” the exams early.


Graduates of 2017 can also, at their own request, choose the date for taking exams in those subjects for which the program has been completed in full. This is relevant primarily for those who are planning - the school course on this subject is taught up to grade 10, and passing one of the exams early can reduce tension during the main period of the Unified State Exam.

Schedule of the main period for passing the Unified State Exam – 2017

The main period for passing the Unified State Exam in 2017 starts on May 26, and by June 16, most graduates will have completed the exam epic. For those who were unable to pass the Unified State Examination on time for a good reason or chose subjects with the same deadlines, there are reserve exam days from June 19. Like last year, the last day of the Unified State Examination period will become a “single reserve” - on June 30 it will be possible to take the exam in any subject.


At the same time, the exam schedule for the main period of the Unified State Examination 2017 is much less dense compared to early exams, and most graduates will probably be able to avoid “overlapping” exam dates.


Separate examination days are allocated for passing compulsory subjects: Russian language, basic mathematics and profile level(students have the right to take either one of these exams or both at once, so they are traditionally spaced out over several days in the main period schedule).


Like last year, a separate day is allocated for the most popular elective exam - social studies. And two separate days are allocated for passing the oral part of the exam in foreign languages. In addition, a separate day is allocated for those who are not in the most demand. Unified State Exam of the subject– geography. Perhaps this was done in order to space out all natural science subjects in the schedule, reducing the number of coincidences.


Thus, in the Unified State Exam schedule there remain two pairs and one “troika” of subjects, exams for which will be taken simultaneously:


  • chemistry, history and computer science;

  • foreign languages ​​and biology,

  • literature and physics.

The exams must take place on the following dates:



  • 26 of May(Friday) – geography,


  • May 29(Monday) – Russian language,


  • May 31(Wednesday) – history, chemistry, computer science and ICT,


  • 2 June(Friday) – specialized mathematics,


  • June 5(Monday) – social studies;


  • June 7(Wednesday) – ,


  • the 9th of June(Friday) – written foreign language, biology,


  • June 13(Tuesday) – literature, physics,


  • June 15(Thursday) and June 16(Friday) – foreign oral.

Thus, most schoolchildren will prepare for graduation “with a clear conscience”, having already passed all scheduled exams and received results in most subjects. Those who missed the main examination period, chose subjects with the same deadlines, received a “failure” in Russian or mathematics, were removed from the exam, or encountered technical or organizational difficulties while taking the Unified State Exam (for example, a lack of additional forms or a power outage), exams will be taken on reserve dates.


Reserve days will be distributed as follows:



  • June 19(Monday) – computer science, history, chemistry and geography,


  • June 20(Tuesday) – physics, literature, biology, social studies, written foreign language,


  • 21st of June(Wednesday) – Russian language,


  • 22nd of June(Thursday) – mathematics at a basic level,


  • June 28(Wednesday) – mathematics at the profile level,


  • June 29(Thursday) – oral foreign language,


  • 30 June(Friday) – all subjects.

Can there be changes in the Unified State Exam schedule?

The draft official Unified State Exam schedule is usually published at the beginning of the school year, discussed, and the final approval of the exam schedule occurs in the spring. Therefore, changes are possible in the Unified State Exam schedule for 2017.


However, for example, in 2016, the project was approved without any changes and the actual exam dates completely coincided with those announced in advance - both in the early and in the main wave. So the chances that the 2017 schedule will also be adopted without changes are quite high.

Many graduates will take physics in 2017, since this exam is in great demand. Many universities need you to have a Unified State Examination result in physics so that in 2017 they can accept you, and you can enroll in certain specialties of the faculties of their institutes. And for this reason, the future graduate, who is studying in the 11th grade, not knowing that he will have to pass such a difficult exam, and not just like that, but with such results that will allow him to actually enter a good specialty that requires knowledge of physics , as a subject and availability Unified State Exam results, as an indicator that this year you have the right to apply for admission to study, guided by the fact that you passed the 2017 Unified State Exam in Physics, have good scores, and think that you will at least enter the commercial department, although I would like to enter the budget department.

And that’s why we think that in addition to school textbooks, the knowledge available in the brain of your head, as well as those books that you have already bought, you will need at least two more files, which we recommend that you download for free.

Firstly, this is years, because this is the base on which you will rely first. There will also be specifications and codifiers by which you will learn the topics that need to be repeated and, in general, the entire procedure of the exam and the conditions for its conduct.

Secondly, these are the KIMs of the trial exam in physics, conducted by FIPI in early spring, that is, in March-April.

These are the ones we offer you to download here, and not only because it’s all free, but mostly for the reason that it’s you who need it, not us. These Unified State Examination tasks in physics are taken from open bank data, in which FIPI places tens of thousands of tasks and questions in all subjects. And you understand that it is simply unrealistic to solve them all, because it will take 10 or 20 years, but you don’t have that kind of time, you need to act urgently in 2017, since you don’t want to lose one year, and besides New graduates will arrive there, whose level of knowledge is unknown to us, and therefore it is not clear how it will be easy or difficult to compete with them.

Taking into account the fact that knowledge fades over time, you also need to learn now, that is, while you have fresh knowledge in your head.

Based on these facts, we come to the conclusion that it is necessary to make every effort to prepare yourself in an original way for any exam, including the 2017 Unified State Examination in Physics, trial early assignments of which we are offering you right now and download here.

This is all you need to understand thoroughly and completely, because it will be difficult to digest everything the first time, and what you will see in the tasks you downloaded will give you food for thought in order to be prepared for all the troubles awaiting you in the future. exam in the spring!

Duration of the physics exam - 3 hours 55 minutes
The work consists of two parts, including 31 tasks.
Part 1: tasks 1 - 23
Part 2: tasks 24 - 31.
In tasks 1–4, 8–10, 14, 15, 20, 24–26 the answer is
whole number or finite decimal fraction.
Answer to tasks 5–7, 11, 12, 16–18, 21 and 23
is a sequence of two digits.
The answer to task 13 is a word.
The answer to tasks 19 and 22 are two numbers.
The answer to tasks 27–31 includes
detailed description the entire progress of the task.
Minimum test score(on a 100-point scale) - 36

Demo version of the Unified State Exam 2020 in physics (PDF):

Unified State Exam

Purpose of the demo product exam assignments is to enable any USE participant to get an idea of ​​the structure of the CMM, the number and form of tasks, and their level of complexity.
The given criteria for assessing the completion of tasks with a detailed answer, included in this option, give an idea of ​​the requirements for the completeness and correctness of recording a detailed answer.
To successfully prepare for passing the Unified State Exam I propose to analyze the prototype solutions real tasks from var-tov exam.

Option No. 3109295

Early Unified State Exam in Physics 2017, option 101

When completing tasks with a short answer, enter in the answer field the number that corresponds to the number of the correct answer, or a number, a word, a sequence of letters (words) or numbers. The answer should be written without spaces or any additional characters. Separate the fractional part from the whole decimal point. There is no need to write units of measurement. In problems 1–4, 8–10, 14, 15, 20, 25–27, the answer is a whole number or a finite decimal fraction. The answer to tasks 5–7, 11, 12, 16–18, 21 and 23 is a sequence of two numbers. The answer to task 13 is a word. The answer to tasks 19 and 22 are two numbers.


If the option is specified by the teacher, you can enter or upload answers to tasks with a detailed answer into the system. The teacher will see the results of completing tasks with a short answer and will be able to evaluate the downloaded answers to tasks with a long answer. The scores assigned by the teacher will appear in your statistics.


Version for printing and copying in MS Word

The figure shows a graph of the projection of body velocity v x from time.

Determine the acceleration projection of this body a x in the time interval from 15 to 20 s. Express your answer in m/s 2.

Answer:

Cube mass M= 1 kg, laterally compressed by springs (see figure), rests on a smooth horizontal table. The first spring is compressed by 4 cm, and the second is compressed by 3 cm. Stiffness of the first spring k 1 = 600 N/m. What is the stiffness of the second spring? k 2? Express your answer in N/m.

Answer:

Two bodies are moving at the same speed. The kinetic energy of the first body is 4 times less than the kinetic energy of the second body. Determine the ratio of the masses of the bodies.

Answer:

At a distance of 510 m from the observer, workers drive piles using a pile driver. How much time will pass from the moment when the observer sees the impact of the pile driver until the moment when he hears the sound of the impact? The speed of sound in air is 340 m/s. Express your answer in p.

Answer:

The figure shows graphs of pressure dependence p from diving depth h for two liquids at rest: water and heavy liquid diiodomethane, at constant temperature.

Choose two true statements that agree with the graphs given.

1) If the pressure inside a hollow ball is equal to atmospheric pressure, then in water at a depth of 10 m the pressure on its surface from the outside and from the inside will be equal to each other.

2) The density of kerosene is 0.82 g/cm 3, a similar graph of pressure versus depth for kerosene will be between the graphs for water and diiodomethane.

3) In water at a depth of 25 m, pressure p 2.5 times more than atmospheric.

4) As the depth of immersion increases, the pressure in diiodomethane increases faster than in water.

5) The density of olive oil is 0.92 g/cm 3, a similar graph of pressure versus depth for oil will be between the graph for water and the x-axis (horizontal axis).

Answer:

A massive load suspended from the ceiling on a weightless spring performs free vertical vibrations. The spring remains stretched all the time. How do the potential energy of a spring and the potential energy of a load behave in a gravitational field when the load moves upward from its equilibrium position?

1) increases;

2) decreases;

3) does not change.

Answer:

A truck moving along a straight horizontal road at a speed v, braked so that the wheels stopped rotating. Truck weight m, friction coefficient of wheels on the road μ . Formulas A and B allow you to calculate the values ​​of physical quantities characterizing the movement of the truck.

Establish a correspondence between the formulas and physical quantities, the value of which can be calculated using these formulas.

AB

Answer:

As a result of cooling of rarefied argon, its absolute temperature decreased by 4 times. How many times did the average kinetic energy of thermal motion of argon molecules decrease?

Answer:

The working fluid of a heat engine receives from the heater an amount of heat equal to 100 J per cycle and does 60 J of work. What is the efficiency of the heat engine? Express your answer in %.

Answer:

The relative humidity of the air in a closed vessel with a piston is 50%. What will be the relative humidity of the air in the vessel if the volume of the vessel at a constant temperature is reduced by 2 times? Express your answer in %.

Answer:

The hot substance, initially in a liquid state, was slowly cooled. The heat sink power is constant. The table shows the results of measurements of the temperature of a substance over time.

Select two statements from the proposed list that correspond to the results of the measurements taken and indicate their numbers.

1) The crystallization process of the substance took more than 25 minutes.

2) The specific heat capacity of a substance in liquid and solid states is the same.

3) The melting point of the substance under these conditions is 232 °C.

4) After 30 min. after the start of measurements, the substance was only in a solid state.

5) After 20 minutes. after the start of measurements, the substance was only in a solid state.

Answer:

Graphs A and B show diagrams p−T And p−V for processes 1−2 and 3−4 (hyperbola), carried out with 1 mole of helium. On the charts p- pressure, V– volume and T– absolute gas temperature. Establish a correspondence between the graphs and statements characterizing the processes depicted on the graphs. For each position in the first column, select the corresponding position in the second column and write down the selected numbers in the table under the corresponding letters.

AB

Answer:

How is the Ampere force acting on conductor 1 from conductor 2 directed relative to the figure (to the right, left, up, down, towards the observer, away from the observer) (see figure), if the conductors are thin, long, straight, parallel to each other? ( I- current strength.) Write the answer in word(s).

Answer:

A direct current flows through a section of the circuit (see figure) I= 4 A. What current will be shown by an ideal ammeter connected to this circuit if the resistance of each resistor r= 1 Ohm? Express your answer in amperes.

Answer:

In an experiment to observe electromagnetic induction, a square frame made of one turn of thin wire is placed in a uniform magnetic field perpendicular to the plane of the frame. The magnetic field induction uniformly increases from 0 to the maximum value IN max per time T. In this case, an induced emf equal to 6 mV is excited in the frame. What induced emf will occur in the frame if T reduce by 3 times, and IN Reduce max by 2 times? Express your answer in mV.

Answer:

A uniform electrostatic field is created by a uniformly charged extended horizontal plate. The field strength lines are directed vertically upward (see figure).

From the list below, select two correct statements and indicate their numbers.

1) If to the point A place a test point negative charge, then a force directed vertically downward will act on it from the side of the plate.

2) The plate has a negative charge.

3) Electrostatic field potential at a point IN lower than at point WITH.

5) The work of the electrostatic field to move a test point negative charge from a point A and to the point IN equal to zero.

Answer:

An electron moves in a circle in a uniform magnetic field. How will the Lorentz force acting on the electron and its period of revolution change if its kinetic energy is increased?

For each quantity, determine the corresponding nature of the change:

1) will increase;

2) will decrease;

3) will not change.

Write down the selected numbers for each physical quantity in the table. The numbers in the answer may be repeated.

Answer:

The figure shows a DC circuit. Establish a correspondence between physical quantities and formulas by which they can be calculated ( ε – EMF of the current source, r– internal resistance of the current source, R– resistor resistance).

For each position in the first column, select the corresponding position in the second column and write down the selected numbers in the table under the corresponding letters.

PHYSICAL QUANTITIES FORMULAS

A) current strength through the source with switch K open

B) current strength through the source with the key K closed

Answer:

Two monochromatic electromagnetic waves propagate in a vacuum. The energy of a photon of the first wave is 2 times greater than the energy of a photon of the second wave. Determine the ratio of the lengths of these electromagnetic waves.

Answer:

How will they change when β − - decay mass number of the nucleus and its charge?

For each quantity, determine the corresponding nature of the change:

1) will increase

2) will decrease

3) will not change

Write down the selected numbers for each physical quantity in the table. The numbers in the answer may be repeated.

Answer:

Determine the voltmeter readings (see figure) if the error in direct voltage measurement is equal to the voltmeter division value. Give your answer in volts. In your answer, write down the value and error together without a space.

Answer:

To conduct laboratory work to detect the dependence of the resistance of a conductor on its length, the student was given five conductors, the characteristics of which are indicated in the table. Which two of the following guides should a student take to conduct this study?