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Reika [66]
3 years ago
8

Which of the angles shown in this picture is the angle of incidence? A B

Physics
2 answers:
Dmitry_Shevchenko [17]3 years ago
6 0
The pictures are not attached, therefore, I cannot give a specific choice.
However, I will try to help you out.

The angle of incidence is defined as the angle formed between the ray of light and the normal to the surface that the ray is falling on.

The angle of incidence can be shown in the attached image.

Therefore, for your question, choose the image on which the above description applies.

Hope this helps :)

dsp733 years ago
6 0
B. is the correct answer, hope this helps!
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A step-up transformer has 50 turns on its primary coil and 2000 turns on its secondary
ryzh [129]

Answer:

Vs= 6000 v

Ip=9.6 A

Explanation:

Ns/Np = Vs/Vp

2000/50 = Vs/150

40 x 150 = Vs

Vs= 6000 v

Vs/Vp=Ip/Is

6000/150=Ip /0.24

Ip=9.6 A

7 0
3 years ago
In a race, a runner traveled 12 meters in 4.0 seconds as she accelerated uniformly from rest. The magnitude of the acceleration
mestny [16]
<span>The runner is moving by uniformly accelerated motion, starting from rest (so, his initial velocity is zero). The law of motion of the runner is
</span>x(t) =  \frac{1}{2}  at^2<span>
where x(t) is the distance covered after time t, and a is the acceleration of the runner. By re-arranging the formula, we get
</span>a= \frac{2S}{t^2}<span>
We know the runner has covered a distance of S=12m in t=4.0 s, and if we plug these numbers into the equation, we find the acceleration of the runner: 
</span>a= \frac{2S}{t^2} = \frac{(2*12m)}{(4s)^2} =1.5 m/s^2<span>
</span>
5 0
3 years ago
Individual sports are different from team sports in that they require an internal focus and dialogue. Please select the best ans
inessss [21]

Answer:

true

Explanation:

It is true that individual sports is different from team sports.

Individual sports depend upon the individual's hard work, focus,determination only he is responsible for his fate.

when we talk about team sports it is about co-ordination , team brilliance individual cannot team sport alone every one have to contribute for the team to succeed.

6 0
3 years ago
Which statements best describe energy ? check all that apply
Ainat [17]

<u>The statements that describes energy best as follows: </u>

  • The total amount of energy in the universe remains constant.
  • Energy can be converted from one form to another.  
  • Energy cannot be created or destroyed.  

<u>Explanation :</u>

The Universe is a closed system of energy from where the thermodynamics first law is quoted i.e. the energy in the closed system remains constant.

The energy in the closed system can neither be created nor destroyed in the absence of external energy supply. However, it keeps on changing from one state to another. These are the absolute statements about the total energy existing in the Universe.  

There are many energy forms existing in the Universe such heat, mass, vibrations etc. that consistently change their form from one to another but the total energy amount is always constant until external energy is applied to the system.

According to the quantum theory, even an electron absorbs or emits energy while jumping from one energy band to the other. There is never a case where energy can create or destroy in a closed system.

6 0
4 years ago
Our atmosphere is attracted by earths what?
GenaCL600 [577]
It's attached by earths gravity that keeps it the same force to stay anchored
4 0
3 years ago
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