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makkiz [27]
3 years ago
12

Which best describes reflection and refraction?

Physics
1 answer:
FromTheMoon [43]3 years ago
7 0
Refraction is when it is broken light, or how much propagating waves are bent. Reflection is light bouncing off of an object and being transferred somewhere else, like a flashlight on a mirror whose light is seen on the ceiling. 
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A coin is placed 32 cm from the center of a horizontal turntable, initially at rest. The turntable then begins to rotate. When t
pashok25 [27]

Answer:

0.39

Explanation:

distance from the center (r) = 32 cm = 0.32 m

speed of the coin (v) = 110 cm/s = 1.1 m/s

acceleration due to gravity (g) = 980 m/s^{2} = 9.8 m/s^{2}

find the coefficient of static friction (k) between the coin and the turn table

frictional force = kmg

before the table begins to move, the frictional force balances the centripetal force (\frac{mv^{2} }{r})

therefore

frictional force = centripetal force

kmg = \frac{mv^{2} }{r}

kg = \frac{v^{2} }{r}

k = \frac{v^{2} }{r} ÷ g

k = \frac{1.1^{2} }{0.32} ÷ 9.8 = 0.39

6 0
3 years ago
True or False: The cycle of seasons on the Earth is caused by the tilt of the Earth on its axis toward and away from the Sun.
damaskus [11]

the correct answer is that it is True

8 0
3 years ago
Compare and Contrast refracting and reflecting microscopes?
mario62 [17]
Eyepiece is magnifies the image so you can see it clearly. Compare and contrast how images form in a refracting telescope reflection telescope and microscope. ...Refracting telescope is uses two lenses to locate somethings. Reflecting telescope uses a large concave mirror to gather light.
~Marley
4 0
3 years ago
Which layer of the sun's atmosphere are you looking at when you look at me in image of the Sun
Hitman42 [59]
The answer is Photosphere.  The photosphere is the lowest layer<span> of the </span>solar<span> atmosphere. It is essentially the </span>solar<span> "surface" that </span>we see<span> when </span>we look<span> at the </span>Sun in "white" light.  It is <span>like a glowing fog, so at a distance, it </span>looks<span> solid, the same way a cloud looks solid from a distance.</span>
7 0
3 years ago
1. If a car travels 400m in 20 seconds how fast is it going?
Marrrta [24]

Answer:

1) 20 m/s

2) 5 m/s

3) 2 m/s

4) 395,000m/9000s

5) 16 km/0.25h

Explanation:

i dunno

5 0
3 years ago
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