Physics, 18.06.2021 04:30 chloehall2269
Hai điện tích điểm bằng nhau, đặt trong chân không cách nhau một khoảng r1 2 cm lực tương tác giữa chúng là 1,6.104 N. = 2 cm.
a) Tìm độ lớn hai điện tích đó?
b) Khoảng cách rz giữa chúng là bao nhiêu để lực tác dụng giữa chúng là 2,5.104N?
Answers: 2
Physics, 22.06.2019 01:10
Suppose that two tanks, 1 and 2, each with a large opening at the top, contain different liquids. a small hole is made in the side of each tank at the same depth 1.57 m below the liquid surface, but the hole in tank 2 has 2.49 times the cross-sectional area of the hole in tank 1. (a) what is the ratio ρ1/ρ2 of the densities of the liquids if the mass flow rate is the same for the two holes? (b) what is the ratio rv1/rv2 of the volume flow rates from the two tanks? (c) at one instant, the liquid in tank 1 is 14.9 cm above the hole. if the tanks are to have equal volume flow rates, what height above the hole must the liquid in tank 2 be just then?
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Physics, 22.06.2019 09:00
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Answers: 3
Hai điện tích điểm bằng nhau, đặt trong chân không cách nhau một khoảng r1 2 cm lực tương tác giữa c...
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