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Maru [420]
3 years ago
8

Explain why reflection images are easily seen at night in a window pane from inside the house, whereas during the day they are n

ot.
Physics
1 answer:
neonofarm [45]3 years ago
4 0

Answer:

High intensity sun light suppresses the light inside the room reflecting in a window pane.

Explanation:

This can be explained as during daytime, there is comparatively higher transmission of the high intensity sunlight inside the house through the window pane than that reflected less intense light from inside the house on the window pane.

This makes the detection of reflection on the window pane more difficult during day time whereas at night these reflection images in a window pane can easily be detected by our eyes due to absence of sun light

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ElenaW [278]
B - speed and direction are combined in another quantity, called velocity. It can be thought of as its speed in a particular direction. Speed is the corresponding scalar quantity, because it does not have a direction.
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3 years ago
Which of the following can lower the activation energy of a system?
exis [7]
Catalysts
a catalyst is something added to a reaction that speeds it up (or lowers the activation energy)

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so B.
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3 years ago
I’ve already figured out A. I just need help with B and C.
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3 years ago
The earth has radius R. A satellite of mass 100 kg is in orbit at an altitude of 3R above the earth's surface. What is the satel
Vera_Pavlovna [14]

Answer:

W= 61.3 N

Explanation:

The only force acting on the satellite is the one due to the attraction from Earth, which obeys the Newton's Universal Law of Gravitation, as follows:

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This force, also obeys the Newton's 2nd Law, so we can write the following equation:

G*ms*me*/ (res)² = ms* a = ms*g

We call to the product of the mass times the acceleration caused by gravity (g), the weight of this mass, so we can write as follows:

G*ms*me / (res)² = ms*g = W (1)

where G = 6.67*10⁻11 N*m²/kg², ms= 100 kg, me= 5.97*10²⁴ kg, and

res=  4 *re = 4*6.37*10⁶ m.

Replacing all these known values in (1), we get the value of W:

W =(( 6.67*5.97/(4*6.37)²) *( 10⁻¹¹ * 10²⁴ /10¹²) )* 100 N = 61.3 N

6 0
3 years ago
How do physicists define velocity?
Natalija [7]

Answer:

Velocity, quantity that designates how fast and in what direction a point is moving.

Explanation:

7 0
3 years ago
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