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andrew11 [14]
3 years ago
8

A boy falls and hits his head with an impulse of 20N-s. On cement, the boy would hit for

Physics
1 answer:
ANTONII [103]3 years ago
5 0

Answer:

xjdifjfiiiffiigigififidghffigfigivig

Explanation:

bye

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3. A car does an emergency stop from 144 km\h in 4s<br> What was its deceleration?
strojnjashka [21]

Answer:

36?

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5 0
2 years ago
- Which of the following does not move as a transverse wave?
Sedaia [141]

Answer:

- Which of the following does not move as a transverse wave?

<em>B. sound waves</em>

because sound waves are longitudinal waves having compressions and rare factions.

Which of these effects describes the change in pitch we hear

moving motorbike goes past?

<em>D</em><em>.</em><em> </em><em>Doppler</em><em> </em><em>eff</em><em>ect</em>

Doppler effect is the phenomenon where there is apparent change in frequency (pitch) and wavelength of a wave due to relative motion of the sound source.

Which of the following does not make use of total internal reflection.

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Endoscope doesn't use total internal reflection since no refraction takes place.

6 0
2 years ago
Convert 800 cm to meters.
Rasek [7]

Answer:8 meters

Explanation:100cm is a meter

8 0
2 years ago
Read 2 more answers
Pls answer quick will mark brainlest and 5 stars
QveST [7]

Answer:A

Explanation:

It’s bigger I am not sure

7 0
2 years ago
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Lighting a match changes chemical energy into heat and light. The total amount of energy _____.
Mariulka [41]
Hello.

The answer is <span>remains the same.

</span>The total amount of energy stays the same because the 1st Law of Thermodynamics states that energy can neither be created nor destroyed, it can only change forms. <span>So the chemical energy is just being converted into heat and light.
</span>
Have a nice day
8 0
3 years ago
Read 2 more answers
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