Cho nguyên tử X có tổng số hạt là 40, số hạt không mang điện nhiều hơn số hạt mang điện là 1 hạt. Tính số p, số n, số e?

Giúp mình với xong mình sẽ cho bạn nhanh nhất 🥇 câu trả lời hay nhất

Tính giới hạn: $\lim_{x \to \infty}= f'(x)$ $\text{với}f(x)=g'(x)$ $\text{và}$ $g(x)=\dfrac{sin^2x+1}{tanx(x^2-1)}$

Tìm giá trị lớn nhất của biểu thức sau : A = - |x - 1| - |x - y + 2| + 2020

Nêu khái niệm , công thức của định luật Ôm

Kể tên 2 loại động vật lưỡng cư

vẽ chibi. vẽ thế nào cũng được.

Tìm m để đồ thị hàm số y=-x+m cắt đồ thị HS \(y = \frac{{2x + 1}}{{x - 1}}\) tại 2 điểm phân biệt \(\begin{array}{l} A:m \in ( - \infty ;1) \cup (1; + \infty )\\ B:m \in ( - 2;2)\\ C:m \in (3 - 2\sqrt 3 ;3 + 2\sqrt 3 )\\ D:m \in ( - \infty ;3 - 2\sqrt 3 ) \cup (3 + 2\sqrt 3 ; + \infty ) \end{array}\)

So sánh A và B mà không cần tính cụ thể giá trị của chúng : A=137.454+206 và B=453.138-110

Help me!!!!!!!! Ex1. Fill in the blanks with "must" or "have to" 1) Professor Quang told me today that i ............. give in that assignment by Friday at the latest 2) Mark! This is a one way street. You .............. turn back and use Le Loi Street 3) My back has been hurting for weeks. I ............ go to the doctor's 4) My company said that if i want this promotion, i ............ go to the doctor's for a thorough medical check-up first 5) I went to see "Titanic" at the cinema last night. What a great film! You ............ go and see it! 6) Linda, thanks for everything. It was a great party. I ............ go now. My husband is waiting for me outside 7) I am taking out a bank loan this month. I ............ pay a lot of taxes all together 8) The local council is really strict about protecting that piece of lawn! You ............ walk around it! Ex2_ Fill in the blanks with affirmative or negative forms of "must or have to/ has to" 1) You really .......... stop driving so fast or you'll have an accident 2) I can give you my bike, so you............ buy a new one 3) They ............ be in hurry, because they have got more than enough time 4) I really ............ remember to post that letter before five o'clock 5) Tomorrow is Sunday. You ......... get up very early 6) This room is a mess. I really ............ find time to clean it 7) You ....... wear a tie if you want to go to that restaurant. It's one of their rules 8) I am broke. I ......... borrow some money to buy a car 9) You ............ stop smoking. It is very harmful 10) Mr.Dickson is travelling abroad this summer, so he .......... get his passport soon 11) All the students ............ obey the school rules 12) You ............ speak too loud, the baby us sleeping 13) Student's ............ look at their notes during the test 14) I have a terrible headache, son i ........... leave early 15) Snow has blocked the roads. We .......... stay here until it's cleared