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Grace [21]
3 years ago
5

Why is it advisable not to look directly at the Sun? Please Give scientific reason for your answer

Physics
2 answers:
Nonamiya [84]3 years ago
8 0
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Featured snippet from the web
This sunlight can flood your retinas, overstimulating the rods and cones that sense light and causing them to release chemicals that can damage the retinas. This condition is known as solar retinopathy, and it can cause permanent eye damage.
OleMash [197]3 years ago
6 0

Hey there!

The sun's UV radiation damages the light receptors of the retina, so we should not look at the sun directly, but during sunrise and sunset the sunlight is coming at us horizontally rather than vertically. It has traveled many miles through the atmosphere to reach our eyes.

Hope this work for you.

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A ship's boiler steam comes out at 112 C and pushes through the system, exiting into the condenser,
solniwko [45]

Answer:

D: 0.239

Explanation:

Equation for ideal efficiency is;

η = 1 - (T_c/T_h)

We are told that;

steam comes out at 112° C. Thus, T_h = 112°C. Converting to Kelvin gives; T_h = 112 + 273 = 385 K

The one exiting into the condenser is kept at 20°C. Thus; T_c = 20 + 273 = 293 K

Thus;

η = 1 - (293/385)

η = 0.239

5 0
3 years ago
Season and date for this person
Tomtit [17]

Answer:

summer June 21 is the answer

6 0
3 years ago
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The sharing of valence electrons between atoms indicates an ionic bond.<br> True or false
morpeh [17]

Answer:

False

Explanation:

Sharing valence electrons to make a bond creates a covalent bond, not an ionic bond.

7 0
3 years ago
The temperature of the cosmic background radiation is measured to be 2.7 k. What is the wavelength of the peak in the spectral d
KATRIN_1 [288]

Answer:

1.07\cdot 10^{-3} m

Explanation:

The peak wavelength of the spectral distribution can be found by using Wien's displacement law:

\lambda=\frac{b}{T}

where

b=2.898\cdot 10^{-3} m\cdot K is Wien's displacement constant

T is the absolute temperature

For the cosmic background radiation, the temperature is

T = 2.7 K

So, the corresponding peak wavelength is

\lambda=\frac{2.898\cdot 10^{-3} m\cdot K}{2.7 K}=1.07\cdot 10^{-3} m

7 0
3 years ago
Name one thing that causes domains of a magnets atoms to lose alignment
kogti [31]
Heat cause domains of magnets atoms to lose alignment
7 0
3 years ago
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