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Lady_Fox [76]
3 years ago
5

What happens when a light beam passes from air into water? Select all that apply. *

Physics
2 answers:
ycow [4]3 years ago
6 0

the secont line is correct

Nana76 [90]3 years ago
3 0
When a light ray passes from air into water a similar thing occurs: the light ray is bent as it strikes the surface of the water. This 'bending of a ray of light' when it passes from one substance into another substance is called refraction.
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Choose the items that help to fully describe voltage.
Zina [86]

Answer:

the easy way to describe this is to use a light as an example.

Explanation:

Voltage is pretty much the loop used to help use a lightbulb to emit light. Without voltage, we would be unable to use lightbulbs. This applies to much more than a lightbulb, but it's the easiest way to describe how voltage works.

8 0
2 years ago
Who discovered laws of gravity and motion? He discovered aspects of light and color, leading to today's spectrum analysis
Vitek1552 [10]

Answer:

Sir Isaac Newton

Explanation:

The laws according to which bodies move and how one body attracts another body were developed by Newton. The three laws of motion and the law of universal gravitation were developed by Newton.

In the seventeenth century almost all the refracting telescopes exhibited color distortion. Newton believed that white light had a spectrum which was the reason for this distortion. The lens of a refracting telescope used to act like a prism which caused the dispersion of light proving Newton's hypothesis.

5 0
3 years ago
A book that weighs 5 newtons is sitting on a table 1.5 meters above the floor. How much gravitational potential energy does the
valina [46]

Answer:7.5J

Explanation:7.5

J

Explanation:

P

E

=

m

g

h

Since

F

=

m

g

in this case

P

E

=

F

h

P

E

=

5

N

⋅

1.5

m

=

7.5

5 0
3 years ago
what is the difference in gravitation potential energy when a 3.5 kg box is raised from a height of 1.2m to height of 4.0m?​
Whitepunk [10]

Answer: 96.138 J

Explanation:

Ep= mGh (on 1.2 m high)

Ep= 3.5kg*9.81*1.2

Ep1=41.202 J

Ep=mGh (on 4m high)

Ep=3.5*9.81*4

Ep2=137.34J

Ep= Ep2-Ep1

Ep=96.138J

6 0
3 years ago
A car on a straight flat road races a boat on a calm canal parallel to the road. The car has a constant acceleration of 1.95m/s2
Gelneren [198K]

Answer:

The winner of the race is the boat because the it get to the goal a time of t=42.42 seg

Explanation:

The problem has tow steps the first one is the time takes each vehicule to get the top speed.

1.

V_{f} =  V_{o} + a*t \\V_{o}= 0 \frac{m}{s} \\t = \frac{V_{f} }{a}  \\t_{1} = \frac{41 \frac{m}{s}  }{1.95 \frac{m}{s^{2} } }=21.02 s \\t_{2} = \frac{32 \frac{m}{s}  }{6.5 \frac{m}{s^{2} } } =4.92 s

2.

Now after they take the top speed have to know who get first to the goal

x_{f}= x_{o} + v_{o}*t + \frac{1}{2}* a *t^{2}\\  a=0 \frac{m}{s^{2} }\\ x_{o}= 0

So the speed Vo is now the final velocity calculated before

t= \frac{x_{f} }{V_{o} } \\t1= \frac{1200m }{41\frac{m}{s} } = 29.2 s\\t2= \frac{1200m }{32\frac{m}{s} } =  37.5 s\\

t1_{total}= 21.2+29.2=50.22 s\\ t2_{total}= 4.91+37.5=42.41 s

4 0
4 years ago
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