Fang Xueqi saw that the test paper was taken away, just about to give out a shout.

　　 But looking sideways, Qin Chen actually took it?

　　 Looking at Qin Chen again, the other side Xueqi made a gesture of silence.

　　 Then, Qin Chen began to alter the physics test paper of Fang Xueqi.

　　 "Xueba, is this... helping me to do the test paper?" Fang Xueqi muttered to herself.

　　 Qin Chen didn't care about Fang Xueqi, now there is not much time left, he wants to help Fang Xueqi complete the test paper as soon as possible.

　　 Actually, Qin Chen decided to grab Fang Xueqi's test paper just now and help her write it himself.

　　 is to avoid the embarrassment of not having enough time.

　　 Qin Chen started writing after dozens of minutes after the exam.

　　 After he finished his test paper, he had already used it for a few minutes. It is estimated that there are only about five minutes left before the test.

　　 In such a short time, Qin Chen is sure to write the answer on the draft paper.

　　 But after Fang Xueqi read the answer, she didn't have time to write it on her test paper.

　　 It was for this reason that Qin Chen planned to help Fang Xueqi do it himself.

　　 This saves trouble, as the saying goes, be a good person and do it to the end, and send the Buddha to the west!

　　 After winning the test paper, Qin Chen directly revised it on the basis of Fang Xueqi's answer.

　　 looked at the title, then glanced at Fang Xueqi's answer.

　　 Qin Chen found that Fang Xueqi had done a lot, and the accuracy rate was not even 50%.

　　 Well, this Fang Xueqi is so bad in physics!

　　 Qin Chen sighed and began to help Fang Xueqi correct the answer.

　　 Actually, it’s not that Fang Xueqi’s poor performance in physics, you have to know that most of the other graduate students in the examination room did not even have a 50% correct rate!

　　 After all, the physics exam is too difficult.

　　Fang Xueqi's physics examination paper, choosing to fill in the blanks, Qin Chen only took 2 minutes to modify it.

　　唔, time is still too late, look at the answers.

　　 Qin Chen turned around and saw the final question of the Physics Examination for Graduate School III, which was the final question.

　　 I only saw this question asking like this.

"As shown in Figure A, there is a long straight thin metal wire in the vacuum, and a metal cylindrical surface with a radius of φ is placed coaxially with the wire. Assuming that the wire emits electrons with the same rate uniformly along the radial direction, the mass of the electron is known to be and the amount of charge is The interaction between the emitted electrons is not considered.

　　 (1) The following two experimental schemes can be used to measure the initial velocity of the emitted electrons:

　　A. Between the cylinder and the wire, only a constant voltage is applied;

　　 B. In the cylinder, only a uniform magnetic field parallel to the magnetic field is applied. "

　　 After reading this question, Qin Chen couldn't help being taken aback.

　　 This question is a bit interesting, it can be said that the design is very clever, which involves several knowledge points.

　　 There are knowledge about initial velocity, electromagnetic field, and voltage.

　　 Although Qin Chen finds this question difficult, that's it.

　　 No matter how difficult this question is, it can't keep up with the college entrance examination paper of Qin Chen's previous life.

　　 Moreover, this question has not reached high school level.

　　 At best, it can catch up with Qin Chen's senior high school entrance examination physics papers in the previous life.

　　 You know, Qin Chen was a top student who graduated from Dongning University in 987 in his previous life.

　　 Solving this kind of junior high school physics knowledge is not a matter of hand.

　　 Soon, Qin Chen's answer was written below this question.

　　"When the voltage or the magnetic induction intensity is equal to, no electrons just reach the cylindrical surface. Calculate the initial velocity of the emitted electrons respectively....."

　　 Because there are many problems in this topic, the knowledge points involved are also very complicated.

　　 Therefore, Qin Chen wrote a whole half-page test paper.

　　 The test papers in this world are similar to A4 paper.

　　 Qin Chen wrote half a page of A4 paper, which is equivalent to writing thousands of words.

　　 But after writing this topic, I looked up and only 2 minutes passed.

　　 There are still a few minutes left before the physics exam is over.

　　 Looking at the time, Qin Chen couldn't help but feel a little emotional.

　　 "Hey, it's been a long time since I did a physics problem. It took two minutes to write such a simple physics problem. It seems that the sentence really complies with that sentence.

　　 Qin Chen sighed.

　　 If you let other graduate students know, Qin Chen's mind at the moment.

　　 It is estimated that they will spew out old blood.

　　 Qin Chen did the last physics question, from reviewing the question to writing out the answer, it only took 2 minutes in total.

　　 Now it's actually slow.

　　 Is this talking human?

　　 Besides, after Qin Chen finished the last question, he was about to throw the test paper back to Fang Xueqi.

　　 Fang Xueqi at this time has long been waiting like an ant on a hot pot.

　　 In her heart, she expected Qin Chen to help him make the correct answer, and at the same time worried that Qin Chen might not be able to do it.

　　 After all, this physics exam is so difficult, especially the latter one. A genius remembers 噺バ一Chinese m.x/8/1/z/w.c/o/m/

　　Obviously, it has gone beyond the line, and it has been designed with something like electromagnetic voltage.

　　Don't say that she is a graduate student in the Chinese Department, I am afraid it is the graduate student who majored in science encountered this problem.

　　 There are no hours, and there is no correct answer at all!

　　 "Qin Chen, can't you just give me the answer? You have to take away my test paper. If you can't do it later, how can you fix it?"

　　 Fang Xueqi's face was anxious, and she looked at Qin Chen who was struggling with the pen, and almost didn't cry.

　　 As time passed, Fang Xueqi's expression became more and more serious.

　　 While she was waiting anxiously, Qin Chen finally put down the pen.

　　 "Are you done? No, only a few minutes have passed. Even the correction of the multiple-choice questions before is not so fast, right?" Fang Xueqi said to her heart.

　　 But when Fang Xueqi was thinking like this, Qin Chen turned around and revealed an angelic smile.

　　 Seeing Qin Chen smile so confidently, Fang Xueqi's gloomy heart seemed to melt away.

　　 I feel warm all over.

　　 "It's done?" Fang Xueqi whispered quietly.

　　 Qin Chen nodded slightly ~lightnovelpub.net~ and then got up to hand in the paper.

　　 got down from her position, because Fang Xueqi's seat was close to the aisle.

　　 When Qin Chen walked to the edge of her seat, he threw the test paper back to her without the teacher's attention.

　　 Then, Qin Chen walked away.

　　 Looking at the test paper placed in front of Fang Xueqi again, there were signs of alteration in many places. The fastest full text of 噺⒏⑴祌 んττρs:/м.χ八㈠zщ.còм/

　　 Multiple-choice questions, Qin Chen revised 30, nearly two-thirds.

　　 Ten fill-in-the-blank questions, Fang Xueqi only did one before, and now they are all finished.

　　Looking at the last big topic, it was actually finished in a densely packed manner.

　　 Fang Xueqi looked at the process and found that there was nothing wrong, so he substituted the data into the calculation, and it was actually correct.

　　 rumbling!

　　 Fang Xueqi is like five thunders!

　　 She never thought that Qin Chen could be in such a short time.

　　 helped her modify all the test questions, even the last big question, she helped her finish it!

　　 Seeing this test paper, Fang Xueqi immediately realized a problem.

　　 is the result of her physics exam this time, which can definitely occupy a great advantage in the total score.

　　 With a perfect score of one hundred, Fang Xueqi didn't expect so many tests.

　　 But looking at it now, I’m afraid it’s okay to be above ninety points.

　　 Forcibly resisting the excitement and excitement, Fang Xueqi raised her hand to signal to the teacher that she wants to hand in the paper in advance!