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Vinvika [58]
3 years ago
15

15 PTS! HELP! BRAINLIEST!

Physics
1 answer:
vodka [1.7K]3 years ago
3 0
I cant do all but I can do number 4
      When force moves ur leg u start skatin and when that happenes ur using a lot of force to move
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When an automobile moves with constant speed down a highway, most of the power developed by the engine is used to compensate for
uysha [10]

Answer:

F=5449 N

Explanation:

Work done is a product of force and displacement ie

Work done, W, = Force*Displacement

Power, P, is Work done/Time

P=\frac {W}{t}=\frac {FS}{t} where P is power, W is work done, F is force, S is displacement and t is time

In this case, F is the frictional force. Converting the power from hp to W, we multiply by 746 hence P=746*168=125328  W

Since displacement/time is velocity, then

P=FV where V is velocity in m/s

Making F the subject

F=\frac {P}{V}

F=\frac {125328}{23}=5449.043478  N

F=5449 N

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The length of the string must vary, while the angle and acceleration are constant

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Convert 14 mg to kg ....<br>​
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<h2>♨ANSWER♥</h2>

14mg = 14 × 10^-3 g

= 14 × 10^-3 / 10^3 kg

= 14 × 10^-6 kg

= 0.014 kg

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| C₄H10<br> Number of hydrogen atoms?
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That's a molecule of Butane.

It's made out of 4 Carbon atoms and 10 Hydrogen atoms.

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Explain why the several different types of microscopes are all neccassary?
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Answer:

  • The different types of microscopes are all necessary because not all experiments require the same level of magnification. ... All microscopes allow visualization of samples that are too small to be viewed by the naked eye.

Explanation:

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