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12345 [234]
4 years ago
6

Need some help on this please

Physics
1 answer:
GREYUIT [131]4 years ago
7 0
I cant see the image for some reason. Mind reuploading?
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Floating piece of wood - buoyancy question.?
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No. because the weight is the same. no m9re water displacement
7 0
3 years ago
ANSWER ASAP PLS!!!
kodGreya [7K]

Answer:

A solenoid field is increased with the increase in the current flow through the coil.

Explanation:

A solenoid is a current carrying coil with a significant number of loops. It works like an electromagnet inside which, a uniform and strong magnetic field is created. The magnetic field outside the solenoid field is nearly zero but not exactly zero.

While experimenting with the solenoid, scientists came to know that the magnetic field generated by the solenoid increases with the increase in the current, flowing through the solenoid.

The magnetic field works strongly around the arena of coil. The field changes its direction only near the ends and gets weak. Else its uniform throughout the loops.

The magnetic field inside the solenoid can be formulated as,

B=\mu n I

Where,

B = Magnetic field generated by the solenoid

\mu = Constant

I = Current flowing through the loops of the solenoid

5 0
3 years ago
What kind of mirror is used in automobiles and trucks
nikdorinn [45]

Convex mirrors are used.

8 0
3 years ago
A film of soapy water on top of a plastic cutting board has a thickness of 255 nm. What wavelength and color is most strongly re
Alona [7]

Answer:

the reflected wavelength is lano = 4.55 10⁻⁷ m which corresponds to the blue color

Explanation:

This is a case of reflection interference, we must be careful

* There is a 180º phase change when light passes from the air to the soap film (n = 1,339), but there is no phase change when passing from the pomp to the plastic (n = 1.3)

* the wavelength within the film is modulated by the refractive index

     λₙ =  λ₀ / n

if we consider these relationships the condition for constructive interference is

     2 t = (m + ½)  λₙ

     2t = (m + ½)  λ₀ / n

      λ₀ = 2t n / (m + ½)

we substitute the values

      λ₀= 2 255 10⁻⁹ 1,339 / (m + ½)

      λ₀  = 6.829 10⁻⁷ (m + ½)

let's calculate the wavelength for various interference orders

m = 0

       λ₀ = 6.829 10⁻⁷/ ( 0 +   ½ )

       λ₀ = 13.6 10⁻⁷

       it is not visible

m = 1

      λ₀ = 6,829 10⁻⁷/ (1 + ½)

       λ₀ = 4.55 10⁻⁷

      color blue

m = 2

      λ₀ = 6.829 10⁻⁷ / (2 + ½)

      λ₀ = 2,7 10⁻⁷

   it is not visible

therefore the reflected wavelength is lano = 4.55 10⁻⁷ m which corresponds to the blue color

5 0
3 years ago
What colors are included in our visible spectrum?​
777dan777 [17]

ALL colors are in the visible spectrum.

"Color" is a word we use to describe light that our eyes can detect.  If the light has a "color", that means we can see it, and somebody gave it a name.  If we can't see it, then we don't have a "color" to describe it.

Every color that has ever been perceived by human eyes is present in the humanly-visible spectrum, except "black".

There are at least hundreds of them. Probably thousands.  Maybe millions.

7 0
3 years ago
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