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Sergio [31]
3 years ago
10

A soap bubble has a diameter of 4mm .Cakculate the pressure inside it if the atmospheric pressure outside is 10^5Nm^2 . The surf

ace tension of soap =2.8* 10^-2N/m
Physics
2 answers:
Len [333]3 years ago
6 0

Answer:

Explanation:

The formula for determining the pressure inside a soap bubble is expressed as

Pi - Po = 4T/r

Where

Pi represents the pressure inside the bubble.

Po represents the pressure outside the bubble or the atmospheric pressure.

T represents the surface tension.

r represents radius of the bubble.

From the information given,

Diameter of bubble = 4mm. Converting to meters, it becomes

4/1000 = 0.004m

Radius of bubble = 0.004/2 = 0.002m

T = 2.8 × 10^-2N/m

Po = 1 × 10^5Nm^-2

Therefore,

Pi - 10^5 = 4 × 2.8 × 10^ -2/0.004

Pi - 10^5 = 28

Pi = 28 + 1 × 10^5 = 100028Nm^-2

Kipish [7]3 years ago
3 0
Look it up it will give the right anwser
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3 years ago
Robin Hood wishes to split an arrow already in the bull's-eye of a target 40 m away.
tamaranim1 [39]

Answer:

5.843 m

Explanation:

suppose that the arrow leave the bow with a horizontal speed , towards he bull's eye.

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