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jok3333 [9.3K]
3 years ago
6

The surface tension of a liquid is to be measured using a liquid film suspended on a U-shaped wire frame with an 12-cm-long mova

ble side. If the force needed to move the wire is 0.096 N, determine the surface tension of this liquid in air.
Physics
1 answer:
raketka [301]3 years ago
5 0

Answer:

σ  = 0.8 N/m

Explanation:

Given that

L = 12 cm

We know that 1 m = 100 cm

L = 0.12 m

The force ,F= 0.096 N

Lets take surface tension = σ

We know that surface tension is given as

\sigma =\dfrac{F}{L}\\\sigma =\dfrac{F}{L}\\Now\ by\ putting\ the\ values\\\sigma =\dfrac{0.096}{0.12}\ N/m\\\sigma=0.8\ N/m

Therefore the surface tension σ  will be 0.8 N/m .

σ  = 0.8 N/m

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Varvara68 [4.7K]

Forget about the car's speed.  You don't need it.

The tires spin 840 rpm.  That's 840 <em>Revolutions per Minute</em> .

There are 60 seconds in 1 minute.  So something that happens 840 times in 1 minute happens (840 / 60) times every second.

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Answer:

F=1.4384×10⁻¹⁹N

Explanation:

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To find

Electrostatic force

Solution

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F=\frac{kq^{2} }{r^{2} }

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Diamond has an index of refraction of 2.419. What is the critical angle for internal reflection inside a diamond that is in air?
SSSSS [86.1K]

Answer:

C) 24.4°

Explanation:

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