subject
Physics, 17.12.2021 07:50 arionaking59p71cfc

con lăn hai bậc có bán kính vành ngoài R=0,8 m, bán kính vành trong r=0,5 m lăn không trượt trên mặt phẳng cố định . dây được cuốn vào vành trong của con lăn , đầu D của dây được kéo với vận tốc v= 0,2 m/s. Tìm vận tốc của các điểm B, M

ansver
Answers: 3

Another question on Physics

question
Physics, 21.06.2019 21:30
Aquantity of gas has a volume of 1.5 m3 and an absolute pressure of 95 kpa. when the gas is compressed to a volume of 0.5 m3, what is the new absolute pressure of the gas? (assume that there’s no change in temperature.)
Answers: 3
question
Physics, 22.06.2019 16:50
Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =
Answers: 1
question
Physics, 22.06.2019 18:50
Avertical clean glass piezometer tube has an inside diameter of d = 1 mm and is used to measure pressure in a horizontal pipe carrying water as shown. due to pressure in the pipe, the water at 20c rises into the tube to a height h. if the water pressure in the pipe is p = 500 pa gauge, estimate the height h: (a) without considering surface tension (b) with surface tension (capillary) effects. the contact angle  can be assumed at 30 deg
Answers: 2
question
Physics, 23.06.2019 00:00
Examine the drawing of a molecule. each ring represents an atom of nitrogen (n). what’s the chemical formula of this substance?
Answers: 2
You know the right answer?
con lăn hai bậc có bán kính vành ngoài R=0,8 m, bán kính vành trong r=0,5 m lăn không trượt trên mặt...
Questions
question
Mathematics, 27.01.2020 20:31
Questions on the website: 13722367