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beks73 [17]
3 years ago
12

B. what does it mean to release a chemical?|

Physics
1 answer:
blsea [12.9K]3 years ago
3 0

(A "release" of a chemical means that it is emitted to the air or water, or placed in some type of land disposal.)

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Which describes the type of image formed by a plane mirror?
guajiro [1.7K]

Answer:

It is a copy of an object and appears to be coming from behind the mirror.

Explanation:

  1. The plane mirror has a flat surface, where of its surface is polished to reflect the light.
  2. The plane mirror shows the image as the same size of the object.
  3. The image produced by the plane mirror is virtual and erect.
  4. But the orientation of the image formed changes the left and right.
  5. Hence,the image appears to be coming from behind the mirror.
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Please help on this one?
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I think it would be near the sun due.to high rays of sun
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Describe the role of minerals in the formation of rocks
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The amount of pressure exerted by a solid is based on
Veronika [31]

Answer:

pressure= force/area

A solid resting on a horizontal surfaceexerts a normal contactforce equals to its weight. The pressure of the solid on the surface depends on the area of contact. (b) the area of contact between the two surfaces. The greater the force or the smaller the area the greater the pressure.

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Light from a helium-neon laser (λ=633nm) passes through a circular aperture and is observed on a screen 4.0 m behind the apertur
devlian [24]

Answer:

d = 0.247 mm

Explanation:

given,

λ = 633 nm

distance from the hole to the screen = L = 4 m

width of the central maximum = 2.5 cm

                                             2 y = 0.025 m

                                               y = 0.0125 m

For circular aperture

  sin \theta = 1.22\dfrac{\lambda}{d}

using small angle approximation

  \theta = \dfrac{y}{D}

now,

   \dfrac{y}{D} = 1.22\dfrac{\lambda}{d}

   y = 1.22\dfrac{\lambda\ D}{d}

   d = 1.22\dfrac{\lambda\ D}{y}

   d = 1.22\dfrac{633\times 10^{-9}\times 4}{0.0125}

         d =0.247 x 10⁻³ m

         d = 0.247 mm

the diameter of the hole is equal to 0.247 mm

5 0
3 years ago
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