Question

Water issues from a hose pipe of internal diameter 1cm at a rate of 5 litres per minute. At what speed is the water flowing through the pipe??

Answer 1

related rates?

Answer 2

sorry

Answer 3

so it is related rates

Answer 4

^i meant calculus

Answer 5

erm, maybe. but I have not started calculus yet.

Answer 6

linear speed of water?

Answer 7

right

Answer 8

divide the rate of water flow in volume by the area of the pipe

Answer 9

why??

Answer 10

area of pore of the pipe= pi*(1^2) sq cm= pi sq cm
per minute water flows 5 litre= 5000 cc
so, rate of flow of water = 5000/pi cm/minute= 1592 cm/minute (approx)

Answer 11

volume= area*length
so, volume/time= area* length/time=area* rate of water flow

Answer 12

per minute or per second?

Answer 13

per minute I believe

Answer 14

sorry, the diameter is 1 cm ^^
so, the area is pi/4

Answer 15

sorry I am really baffled

Answer 16

me too.. after knowing the solution of ur text :)

Answer 17

Actually the answer 106cm/s

Answer 18

yeah, thats correct

Answer 19

beg your pardon

Answer 20

but I still do not fully understand.

Answer 21

which part?

Answer 22

area of pore of the pipe= pi*(1^2) sq cm= pi sq cm

Answer 23

no, as 1 is the diameter, radius is 1/2
as area of the circle= pi r^2
so, area of the pore = pi/4