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Shalnov [3]
4 years ago
12

Please help with number 18

Physics
1 answer:
Andrew [12]4 years ago
3 0

think its chemistry, hope that helps love

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Some springs are wound with the wire under torsion, so that they are naturally tightly compressed. The plot of extension vs. app
ANEK [815]

The "unstretched length" is shorter than the actual unloaded length because the load applied to the material caused the extension of the material thereby increasing its length.

<h3>Hooke's law</h3>

Hooke's law states that the force applied to an elastic material is directly proportional to the extension of the elastic material.

F = kx

where;

  • F is the applied force
  • k is the spring constant
  • x is the extension

Thus, we can conclude that, the "unstretched length" is shorter than the actual unloaded length because the load applied to the material caused extension of the material thereby increasing the length of the material.

Learn more about Hooke's law here: brainly.com/question/2648431

6 0
2 years ago
22. Explain in detail what happens to particles before, during, and after vaporization.
Natasha2012 [34]

Answer:

Vaporization occurs when a substance changes from a liquid to a gas. The molecules in a liquid are in constant motion while staying relatively close together due to intermolecular forces. When an increase in temperature occurs, the molecules' kinetic energy also increases. If a liquid is heated the particles are given more energy and move faster and faster expanding the liquid. The most energetic particles at the surface escape from the surface of the liquid as a vapor as it gets warmer. Liquids evaporate faster as they heat up and more particles have enough energy to break away.

Mark Me Brainliest If u Found it helpful

3 0
4 years ago
A soccer player is running upfield at 10 m/s and comes to a stop in 3 seconds facing the same direction. What is his acceleratio
I am Lyosha [343]
His acceleration would be 3.34 m/s 
5 0
4 years ago
A thin rod of length 1.4 m and mass 180 g is suspended freely from one end. It is pulled to one side and then allowed to swing l
prisoha [69]

Answer:

K.E = 0.1905 J

Explanation:

From the question we are told that:

Length L=1.4m

Mass m=180g

Angular Velocity \omega=1.80rads/s

Generally the equation for Kinetic energy K.E is mathematically given by

 K.E =0.5 (1/3 ML^2 )w^2

 K.E =0.5 ( 1/3 * 0.18 * 1.4^2 ) 1.8^2

 K.E = 0.1905 J

5 0
3 years ago
If 1.34 ✕ 1020 electrons move through a pocket calculator during a full day's operation, how many coulombs of charge moved throu
ioda

Given :

Number of operations move through a pocket calculator during a full day's operation , n=1.34 \times 10^{20} .

To Find :

How many coulombs of charge moved through it .

Solution :

We know , charge in  one electron is :

e^-=-1.6\times 10^{-19}\ coulombs

So , charge on n electron is :

C=e^-\times n\\C=-1.6\times 10^{-19}\times 1.34\times 10^{20} \ C\\C=-21.44\ C

Therefore , -21.44 coulombs of charge is moved through it .

Hence , this is the required solution .

3 0
3 years ago
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