Точка b находится в середине оирезка ac. неподвижные точечные заряды 2q и -q расположены в точках а и с соответсвенно.какой заряд надо поместить в точку с взамен заряда -q,чтобы напряженность электрического поля в точке b увеличилась в 2 раза варианты ответов: 1) 2q; 2)-2q; 3) 4q; 4) -4q объясните подробно как решать данное
Kolobok is a character of the East Slavic folk tale of the same name, depicted in the form of a small spherical wheat bread, which escaped from his grandparents who baked it, from various animals, but was eaten by a fox. The moral of the Kolobok fairy tale and its lessons can be interpreted in different ways. And she teaches that you cannot trust every person you cross, and you need to have your head on your shoulders to make any decision. ... The main idea is that you shouldn't talk to strangers in the forest and sing to them your entire biography. And about the author In fact, this is a folk tale!
I think that the people with this fairy tale wanted to tell us that there is no need to boast and be so self-confident in life. There will always be someone more cunning!
lena: Hello?
James: Hi. This is James.
Elena: Hi, James.
James: Elena, I need *your * help.
Elena: Oh, yeah?
James: You told me to call you, because I need to write
*an article *
about a journalist.
Elena: Oh, right, now I remember.
James: You said that your friend is a part-time journalist. He can give me some *advice *
Elena: He’s my uncle’s friend, really. But he’s really nice.
James: Can you give me his phone number?
Elena: Oh, right, er, I’ve got it here somewhere. Hang on a minute.
Mmm. Yes. It’s 4 *6318000042 * . Ask for John Smith and say that you’re Elena Miller’s friend.
James. OK. Thank you very much.
Elena: It’s OK. Let me know how it goes.
Объяснение: Правильно