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strojnjashka [21]
3 years ago
11

Define surface tension .

Physics
2 answers:
melisa1 [442]3 years ago
4 0

Answer:

the tension of the surface film of a liquid caused by the attraction of the particles in the surface layer by the bulk of the liquid, which tends to minimize surface area.

Explanation:

lana66690 [7]3 years ago
3 0

Answer:

Surface tension is an effect where the surface of a liquid is strong

Explanation:

Surface tension is an effect where the surface of a liquid is strong

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At table tennis ball has a positive charge of 4.50 × 10-8 coulombs. It experiences a force of 2.72 × 10-3 newtons due to an elec
kari74 [83]
The answer is 6.04 × 10^4 N/C.
Formula for the strength of the electric field is:
E = F/q
E = 2.72 × 10^-3 N/4.50 × 10^-8 C
E = 0.60444 × 10^5 N/C
E = 6.04 × 10^4 N/C
4 0
4 years ago
Read 2 more answers
How does a lid slow down evaporation cooling??
iris [78.8K]

Answer:

It reflects the gas from entering the air and the other gases from the bottom, pushes the top gases that can't get through making it slow down, and eventually stop.

Explanation:

Ex: When you go on a slide and sit at the bottom, the other kids go down and stop behind you. So does the next kid and the next stopping the process of kids going down the slide.

4 0
3 years ago
a crude approximation of voice production is to consider the breathing passages and mouth to be a resonating tube closed at one
prohojiy [21]

The fundamental frequency of the tube is 0.240 m long, by taking air temperature to be 37^oC is 367.42 Hz.

A standing wave is basically a superposition of two waves propagating opposite to each other having equal amplitude. This is the propagation in a tube.

The fundamental frequency in the tube is given by

f=\frac{v_T}{4L}

where, v_T=v\sqrt{\frac{T}{273} }

Since, T=37+273 K = 310 K

v = 331 m/s

\therefore v_T=331\sqrt{\frac{310}{273} } = 352.72 \ m/s

Using this, we get:

f=\frac{352.72}{4(0.240)} \\f=367.42 \ Hz

Hence, the fundamental frequency is 367.42 Hz.

To learn more about Attention here:

brainly.com/question/14673613

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7 0
2 years ago
Radio waves are propagated through the interaction of:.
cluponka [151]

Answer:

Electric and magnetic fields:

Maxwell's equations tell us that

a changing magnetic field creates a changing electric field      and

a changing electric field creates a changing magnetic field

5 0
3 years ago
An alert driver can apply the brakes fully in about 0.5 seconds. How far would the car travel if it
dybincka [34]

Answer:

The car would travel after applying brakes is, d = 14.53 m

Explanation:

Given that,

The time taken to apply brakes fully is, t = 0.5 s

The velocity of the car, v = 29.06 m/s

The distance traveled by the car in 0.5 s, d = ?

The relation between the velocity, displacement, and time is given by the formula                

                                d = v x t    m

Substituting the values in the above equation,

                                  d = 29.06 m/s x 0.5 s

                                     = 14.53 m

Therefore, the car would travel after applying brakes is, d = 14.53 m

8 0
4 years ago
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