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Mashcka [7]
2 years ago
13

If you increase your speed from 10 mph to 30 mph, how much will your stopping distance increase?

Physics
1 answer:
Nana76 [90]2 years ago
6 0

When you double the speed of your car, your braking distance quadruples. every time you double your speed, you multiply your braking distance by four.

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Which type of reaction does this chemical equation represent? 2Na + MgCl2 - 2NaCl + Mg
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Answer: Single replacement

Explanation: A P E X

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Can we divide two vectors?
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Yes i think so im pretty sure
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Why would a flare be observed in visible light, when they are so much brighter in X-ray and ultraviolet light?
raketka [301]

Answer:

Because it radiates a spectre of frequencies, this means that it radiates in a continuous range of frequencies, ones with more intensity (like x-ray and ultraviolet) and others with less intensity (like the visible light). While most of the radiation is not in the visible range, there still is a part of the radiation in the visible spectre. And while this part is not the most intense part, the radiation is so large that we can see a very bright visible light.

3 0
2 years ago
Which shows increasing entropy?
fomenos

Answer:

mowing a lawn

Explanation:

Entropy is the degree of disorderliness of a system. As a body moves from a more ordered state to a less ordered one, the entropy of the system increases.

  • Mowing a lawn is a typical example of increasing entropy.
  • When a lawn is being mowed, the grasses becomes disordered without any fixed orientation.
  • Folding a clothe is trying to bring orderliness to the clothe patterning.
  • Washing dishes will make one arrange them in an ordered way.
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6 0
3 years ago
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from the edge of the rooftop of a building, a boy thros a stone at an angle of 25 above the horizontal. The stone hits the groun
ella [17]

Answer:38.675 m/s

Explanation:

\theta =25^{\circ}

t=4.2 s

R_x=105m

Solving in x direction

R_x=ut+\frac{1}{2}\left ( 0\right )t^2

105=ucos25\times 4.2

ucos25=25

u=27.584 m/s

Initial velocity in vertical direction usin25

Let h be the height of Rooftop

h=\left ( -usin25\right )4.2+\frac{1}{2} \left ( 9.8\right )\left ( 4.2\right )^2

h=37.47 m

Therefore final vertical velocity is v_{vf}^2-\left ( usin25\right )^2=2\times 9.81\times 37.47

v_{vf}=29.51 m/s

Final Resultant velocity

V_{final}=\sqrt{29.51^2+24.99^2}

V_{final}=38.675 m/s

6 0
3 years ago
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