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Doss [256]
3 years ago
5

Which are characteristics of the speed of light? Check all that apply.

Physics
2 answers:
natali 33 [55]3 years ago
7 0
The speed of light is the speed all waves travel ?
No, only the speed of all electromagnetic waves.
It's different for ocean waves, rope waves, sound waves,
guitar-string waves, slinky waves, etc.

The speed of light is the speed electromagnetic waves travel ?
Yes.  Light is one of the electromagnetic waves.

The speed of light is 3.0 x 108 m/s in space ?
Yes.  That's a good approximation, and a nice easy number
to remember. 
It's only about 0.07% faster than the real number:  2.99792458 x 10⁸ m/s .

The speed of light is the same in all matter ?
No.  It's different in every substance, and the speed in any
substance is less than the speed in space (vacuum).

The speed of higher frequency light slows down
more than
lower frequency light in matter ?
Yes, slightly.  That's why the colors spread out on the way
through a prism to make a spectrum, or on the way through
raindrops to make a rainbow.
Vesnalui [34]3 years ago
4 0

Answer:

B C and E

Explanation:

B: The speed of light is the speed electromagnetic waves travel

C: The speed of light is 3.0 x 108 m/s in space.

E: The speed of higher frequency light slows down more than lower frequency light in matter.

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magneisuim and gold

Explanation:

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4 years ago
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Explain when a falling object is in free fall.
Ksenya-84 [330]
There is no gravity
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4 years ago
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An object moving due to gravity can be described by the motion equation y=y0+v0t−12gt2, where t is time, y is the height at tha
LenaWriter [7]

Answer:

t=6.4534 s

Explanation:

This is an exercise where you need to use the concepts of <em>free fall objects</em>

Our <u>knowable variables</u> are initial high, initial velocity and the acceleration due to gravity:

y_{0}=75m

v_{oy} =20m/s

g=9.8 m/s^{2}

At the end of the motion, the <u><em>rock hits the ground</em></u> making the final high y=0m

y=y_{o}+v_{oy}*t-\frac{1}{2}gt^{2}

If we <em>evaluate the equation</em>:

0=75m+(20m/s)t-\frac{1}{2}(9.8m/s^{2})t^{2}

This is a classic form of <u><em>Quadratic Formula</em></u>, we can solve it using:

t=\frac{-b ± \sqrt{b^{2}-4ac } }{2a}

a=-4.9\\b=20\\c=75

t=\frac{-(20) + \sqrt{(20)^{2}-4(-4.9)(75) } }{2(-4.9)}=-2.37s

t=\frac{-(20) - \sqrt{(20)^{2}-4(-4.9)(75) } }{2(-4.9)}=6.4534s

Since the <u><em>time can not be negative</em></u>, the <em>reasonable answer</em> is

t=6.4534s

8 0
3 years ago
What is the speed of a bobsled whose distance-time graph indicates that it traveled 123m in 28s?
Irina18 [472]
4.39 seconds per meter
6 0
3 years ago
Describe the motion of the moon in space to produce the different phases of the moon.
ss7ja [257]

Answer:

Moon slowly moves eastward, rising later each day and passing through its phases:

Explanation:

4 0
3 years ago
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