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marshall27 [118]
3 years ago
8

The critical angle for a beam of light passing from water into air is 48.8°. this means that all light rays with an angle of inc

idence in the water that is greater than 48.8° will be
Physics
2 answers:
Len [333]3 years ago
8 0

totally internally reflected

liraira [26]3 years ago
3 0

totally internally reflected

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An object of height 2.7 cm is placed 29 cm in front of a diverging lens of focal length 16 cm. Behind the diverging lens, and 12
kati45 [8]

Answer:

A)  q = -8.488 cm ,  B)  m = 0.29

Explanation:

A) For this exercise in geometric optics, we will use the equation of the constructor

          \frac{1}{f} = \frac{1}{p} +  \frac{1}{q}

where p and q are the distance to the object and image, respectively and f is the focal length

in our case the distance the object is p = 29 cm the focal length of a diverging lens is negative and indicates that it is f = - 12 cm

         \frac{1}{q} = \frac{1}{f} - \frac{1}{p}

     

we calculate

          \frac{1}{q} = - \frac{1}{12} - \frac{1}{29}

          \frac{1}{q} = - 0.1178

          q = -8.488 cm

the negative sign indicates that the image is virtual

B) the magnification is given

          m = \frac{h'}{h} = - \frac{q}{p}

       

we substitute

          m = - \frac{-8.488}{29}

          m = 0.29

the positive sign indicates that the image is right

4 0
3 years ago
What is the difference in the speed of sound on a warm day versus on a cold day?
seraphim [82]
The sun is bright and when its cold there is no sun
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Why was Earth very hot at the beginning of its formation? Select all that apply.
Sladkaya [172]

Answer:

heat came from the supernova that led to the formation of solar system

4 0
3 years ago
Particle accelerators make it easy for scientists to study what?
monitta
The answer is electricity 
3 0
3 years ago
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Veronica claims that she can throw a dart at a dartboard from a distance of 2 m and hit the 5 cm wide bullseye if she throws the
wariber [46]
First, find the amount of time for the dart to hit the board using this equation: t = d/v

t = 2 m/ 15 m/s = 0.133 s

Then, find the height the dart has fallen from its initial point using this equation: h = 0.5gt²

h = 0.5(9.81 m/s²)(0.133 s)² = 0.0872 m or 8.72 cm

Since the diameter of the bull's eye is only 5 cm, and you started at the same level of the top of the bull's eye, that means the maximum allowance would only be 5 cm. Since it exceeded to 8.72 cm, it means that <em>Veronica will not hit the bull's eye.</em>
3 0
3 years ago
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