Вопрос школьника по предмету Физика
какая жидкость будет оказывать давление 80 кпа на высоте 10 м
Ответ учителя по предмету Физика
Дано: Решение:
р = 80 кПа
h = 10 м p = ρgh => ρ = p/gh = 80000:100 = 800 (кг/м³)
g = 10 Н/кг
——————— Такая плотность соответствует плотности нефти,
Найти: ρ — ? спирта или керосина.
Ответ: нефть, спирт или керосин.
Похожие вопросы от пользователей
M: Jill, how nice to see you. I (1) _______ (not think) we’ve seen each other since that party at Jim’s last year. How (2) ______ (you/get on)?
J: Oh, fine. Everything (3) ______ (go) very well.
M: (4) ______ (you still/go out) with Dave?
J: No, I’m not, but, I (5) ______ (go out) with someone called Jamie: I met him at my pottery class.
M: Is he here now?
J: Yes look, he’s over there. He (6) ______ (talk) to Charlotte.
M: Oh yes, (17) ______ (see) him. (8) ______ (he/wear) a yellow jumper?
J: Yes, that’s him.
M: Oh, he (9) ______ (look) really nice.
J: He is. I introduce you to him when he (10) ______ (come) over here. So what about you? How (11) ______ (life/treat) you?
M: Not too badly. I (12) ______ (still/work) at that awful cafe. I (13) ______ (keep) looking for other jobs but the problem is that I (14) ______ (feel) so tired when I (15) ______ (get in) that I (16) ______ (not have) much energy to look through all the job ads and everything. Oh well, I (17) ______ (suppose) something else will come up soon.
J: I (18) ______ (hope) so; Oh look, Jamie (19) ______ (come over) here. (20) ______ (you/want) to meet him?
M: Oh yes.