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3 years ago

What part(s) of a reflecting telescope form the image?

2 answers:

5 0

A reflecting telescope is an optical telescope which uses a combination of curved or plane mirrors to reflect light and form an image, rather than lenses to refract or bend light to form an image It is usually used for astronomical purposes.

Hope this helps (:

larisa [96]3 years ago

5 0

The image is formed by the objective mirror ... the big one at the bottom end of the telescope. To SEE the image, you can put an eyepiece an inch or two behind it, or a piece of film or a CCD to capture it.

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Kruka [31]

Answer:

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Explanation:

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2 years ago

Please help with an explanation for 30 points even if u only do one (but with good explanation)

Illusion [34]

Answer:

1- 4Ω

Explanation:

if 2Ω is 2 meters, than 4 metres is 4Ω

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3 years ago

Parallel wave fronts are incident on an opening in a barrier. Which diagram shows the configuration of wave fronts and barrier o

Ulleksa [173]

Explanation :

It is given that, parallel wave fronts are incident on an opening in a barrier. Diffraction of the waves depends on the size of opening and the wavelength of light used as per the following relation :

$y\propto\dfrac{\lambda}{a}$

where,

$\lambda$ is the wavelength of light

and a is the opening size (from fig)

So, it is clear that diffraction of waves depends directly on the wavelength of light and inversely on the size of opening.

Hence, the correct option is (2).

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3 years ago

Read 2 more answers

The National High Magnetic Field Laboratory once held the world record for creating the strongest magnetic field. Their largest

Marina86 [1]

Answer:

a = 85.3×10⁶ m/s²

Explanation:

Please see the attachment below.

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3 years ago

Five-gram samples of copper and aluminum are at room temperature. Both receive equal amounts of energy due to heat flow. The spe

hammer [34]

Answer:

c. The copper will get hotter than the aluminum.

Explanation:

The energy due to heat flow, i.e. the heat energy, is proportional to the product of the mass, the specific heat capacity, and the change in temperature:

$Heat=mass\times \text{specific heat capacity }\times\Delta T$

From which you obtain:

$\Delta T=\dfrac{Heat}{mass\times \text{specific heat capacity}}$

That equation tells that the change in temperature is inversely related to the product of the mass and the specific heat.

In the problem, the masses of the samples of copper and aluminum are equal (5.00g) and both samples receive equal amounts of energy due to heat flow, thus the only difference is the specific heat capacity of each sample.

From the above stated relationship between the change in temperature, the heat, the mass, and the specific heat capacity, under the assumption of all the other conditions equal (heat energy and mass), the higher the specific heat capacity the lower the change in temperature, and the lower the specific heat capacity the greater the change in temperature.

The heat capacity of copper (0.09 cal/g°C) is lower than the specific heat capacity of aluminum is (0.22 cal/g°C), thus the increase in temeperature of the copper sample will be greater than that of the aluminum sample. This means that the copper will get hotter than the aluminum (option c.)

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3 years ago