2 years ago

SOMEONE HELP ME!!!!!

2 answers:

8 0

Answer:

The angle of reflection is 180 degrees because if you mapped it on a coordinate plane, both the real object and the image in the mirror will be on opposite sides.

katen-ka-za [31]2 years ago

7 0

Answer:

angle of refraction is the same as angle of incidence

Explanation:

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Megan and her brother are watching a television program. Megan notices that the television produces a lot of light. What else do

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I do believe it’s heat !

3 0

2 years ago

Monochromatic light passes through a double slit, producing interference, the distance between the slit centres is 1.2 mm and th

Alik [6]

Answer:

The wavelength of the light is $7200\ \AA$ .

Explanation:

Given that,

Distance between the slit centers d= 1.2 mm

Distance between constructive fringes $\beta= 0.3\ cm$

Distance between fringe and screen D= 5 m

We need to calculate the wavelength

Using formula of width

$\beta=\dfrac{D\lambda}{d}$

Put the value into the formula

$0.3\times10^{-2}=\dfrac{5\times\lambda}{1.2\times10^{-3}}$

$\lambda=\dfrac{0.3\times10^{-2}\times1.2\times10^{-3}}{5}$

$\lambda=7.2\times10^{-7}\ m$

$\lambda=7200\ \AA$

Hence, The wavelength of the light is $7200\ \AA$ .

8 0

2 years ago

What process changes a liquid to a solid?

kipiarov [429]

Answer:

D. Freezing?

Explanation:

Get water, put it in the freezer, turns into ice after a few hours.

5 0

2 years ago

A star is located at a distance of about 100 million light years from Earth. An astronomer plans to measure the distance of the

nlexa [21]

<span>d. The parallaxes beyond a few thousand light years are
too small to be measured with common instruments.

I'm not sure that parallax can even be used out to a few
thousand light years.

The NEAREST star to Earth has the BIGGEST parallax.
The star is Alpha Centauri. It's only 4 light years away
from us, and its parallax is 0.000206 of a degree !
I have no idea how astronomers can measure angles
so small ... and that's the BIGGEST parallax angle of
ANY star.</span>

5 0

3 years ago

You should ALWAYS carry the microscope by placing your hand on the base of the microscope and gripping the red handle with your

marin [14]

Answer:

true

Explanation:

place hand under base and one on the arm/handle

4 0

3 years ago