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vampirchik [111]
3 years ago
9

What is reflection of light

Physics
1 answer:
AnnZ [28]3 years ago
4 0

Answer: When a ray of light approaches a smooth polished surface and the light ray bounces back, it is called the reflection of light. The incident light ray which lands upon the surface is said to be reflected off the surface. The ray that bounces back is called the reflected ray.<u> </u>

<u> </u>

<u> </u>Have a great day and stay safe !

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The watermark can be of different types depending on the application. A watermark will resist manipulations of the media. Howeve
Marina86 [1]

<em>The first blank is </em><em>robust watermark</em>; a robust watermark will not resist tampering.

<em>The second blank is </em><em>fragile watermark</em><em>;</em> a fragile watermark will resist manipulations of the media.

<h3>What is a watermark?</h3>

A watermark is a faint design made in paper during manufacture that is visible when held against the light and clearly identifies the maker.

The watermark can be of different types depending on the application and they include:

  • A robust watermark will not resist tampering.
  • A fragile watermark will resist manipulations of the media.

Thus, The first blank is robust watermark; a robust watermark will not resist tampering.

The second blank is fragile watermark; a fragile watermark will resist manipulations of the media.

Learn more about watermark here:.

brainly.com/question/24206908

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7 0
2 years ago
A playground merry-go-round has radius 2.40 m and moment of inertia 2100 kg⋅m2 about a vertical axle through its center, and it
daser333 [38]

Answer:

a) 0.31 rad/s

b) 100 J

c) 6.67 W

Explanation:

(a) the force would generate a torque of:

T = FR = 18 * 2.4 = 43.2 Nm

According to Newton 2nd law, the angular acceleration would be

\alpha = \frac{T}{I} = \frac{43.2}{2100} = 0.021 rad/s^2

It starts from rest, then after 15s it would achieve a speed of

\omega = \alpha t = 0.021 * 15 = 0.31 rad/s

(b) The distance angle swept by it is:

\theta = \frac{\alpha t^2}{2} = \frac{0.021 * 15^2}{2} = 2.314 rad

Hence the work by the child

W = T\theta = 43.2 *2.314  \approx 100 J

c) Average power to work per time unit

P = \frac{W}{t} = \frac{100}{15} = 6.67 W

7 0
3 years ago
A motor does 8000j of work in 20 seconds. What is the power of the motor
lozanna [386]
Power = work / time = 8000J / 20s = 400W

5 0
3 years ago
List two elements that have the same reactivity
timama [110]

Answer:

electron and neutron

Explanation:

4 0
3 years ago
Read 2 more answers
:)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))
FromTheMoon [43]

Good morning dear...

Have a beautiful and joyful day ahead.

6 0
2 years ago
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