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Physics, 21.06.2019 19:30, yolinda123429
Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies.
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Physics, 22.06.2019 03:00, jdkrisdaimcc11
Do you agree with scientist’s prediction about the warming of alaska and other polar regions?
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Physics, 22.06.2019 16:40, ashleypere99
Panel bc in fig. p2.76 is semi-circular, with the 3 meter radius and horizontal straight edge through point b. compute (a) the hydrostatic force of the water on the panel, (b) its center of pressure, and (c) the moment of this force about point b. assume atmospheric pressure on the dry side of the panel
Answers: 3
Physics, 22.06.2019 16:40, Crxymia
Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".
Answers: 3
hai vật xuất phát từ a đến b cách nhau 460km chuyển động cùng chiều theo hướng từ a đến b vật 1 chuy...
Mathematics, 09.04.2021 15:30
Mathematics, 09.04.2021 15:30
Mathematics, 09.04.2021 15:30
Mathematics, 09.04.2021 15:30
Mathematics, 09.04.2021 15:30
Mathematics, 09.04.2021 15:30