[Vật Lý 12] Chữa đề thi thử - Liên trường THPT Nghệ An (Phần 1) - Thầy VNA

Hello everyone, today I'm going to teach you the exercises of the school of general engineering of An An University Just two days ago, we have 40 exercises, including 35 easy exercises and 5 difficult exercises The 5 difficult exercises start from exercise 36, which is a bit more difficult than the first 30 exercises And I will conquer the first 30 exercises together And the teacher will set the goal for us to finish the first 30 exercises before 15 minutes That is, you will only need 15 minutes to conquer 8.75 points in the subject of the school of general engineering of An An University 15 minutes, 8.75 points, never that easy, right? Now, the teacher and you will conquer 8.75 points in 15 minutes Let's start Question 1 The long wave is the wave of the moving particles in line with the direction of the wave Question 1 is C, correct The mass has a value that does not change with a moving object That is, the diameter is D, correct What is the radius of the force of strong interaction in the nucleus in the radius of the nucleus? It is about 10 minus 15 meters, which is 10 minus 13 centimeters 13 is A, correct Question 14 What is the angular frequency of the spring? It is F divided by 1 over 2pi times K divided by M, 4D, correct Next, the fifth question Does this wave have a voltage and a current? The voltage is 45 degrees, the current is 90 degrees, right? We get that I is earlier than U That's it, I is earlier than U Proves that the wave has an antisymmetric property Antisymmetric property, that is, ZC is greater than ZL The answer is C, correct Next, what is the radius of the spring? It is R0 divided by 5.3 times 10 minus 11 meters The radius is at the M-axis The M-axis is the third axis So our radius is Rn divided by R0 That is, 9R0 9 times 5.3, 9 times 5.45 is 47.7 I get 9 times R0 is done OK, our answer B is correct The answer D is correct