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Vedmedyk [2.9K]
3 years ago
8

1 The Earth's crust is made up of plates that can move. Which of the following topographic features could be directly formed by

the movement of the Earth's plates? I. midocean ridges II. mountains III. sand dunes IV. coral reefs A. I, II, and III only B. II, III, and IV only C. I and II only D. II and III only
Physics
1 answer:
olga_2 [115]3 years ago
7 0
Can you write this better and from my info of what i know i know that one way is the trenches in the ocean like marianas trench  <span />
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Why might a balloon, that is inflated almost to its capacity, pop or explode on an extremely warm day?
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On an extremely warm day, the balloon might pop because gases expand the hotter they get, and due to its temperature it is likely to pop if it is, indeed, nearly, if not completely, filled to its capacity.  I hope this helps, have a nice day!
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The noise floor, also known as additive white Gaussian noise (AWGN), is a continuous noise level that appears over a wide spectr
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Answer:

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Explanation:

solution

the noise floor is AWGN ( additive white Gaussian noise )  

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so that it is additive white Gaussian noise  

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In the Daytona 500 auto race, a Ford Thunderbird and a Mercedes Benz are moving side by side down a straightaway at 71.0 m/s. Th
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<u>Answer:</u>

<em>Thunderbird is 995.157 meters behind the Mercedes</em>

<u>Explanation:</u>

It is given that all the cars were moving at a speed of 71 m/s when the driver of Thunderbird  decided to take a pit stop and slows down for 250 m. She spent 5 seconds  in the pit stop.

Here final velocity v=0 \ m/s

initial velocity u= 71 m/s  distance  

Distance covered in the slowing down phase = 250 m

v^2-u^2=2as

a= \frac {(v^2-u^2)}{2s}

a = \frac {(0^2-71^2)}{(2 \times 250)}=-10.082 \ m/s^2

v=u+at

t= \frac {(v-u)}{a}

= \frac {(0-71)}{(-10.082)}=7.042 s

t_1=7.042 s

The car is in the pit stop for 5s t_2=5 s

After restart it accelerates for 350 m to reach the earlier velocity 71 m/s

a= \frac {(v^2-u^2)}{(2\times s)} = \frac{(71^2-0^2)}{(2 \times 370)} =6.81 \ m/s^2

v=u+at

t= \frac{(v-u)}{a}

t= \frac{(71-0)}{6.81}= 10.425 s

t_3=10.425 s

total time= t_1 +t_2+t_3=7.042+5+10.425=22.467 s

Distance covered by the Mercedes Benz during this time is given by s=vt=71 \times 22.467= 1595.157 m

Distance covered by the Thunderbird during this time=250+350=600 m

Difference between distance covered by the Mercedes  and Thunderbird

= 1595.157-600=995.157 m

Thus the Mercedes is 995.157 m ahead of the Thunderbird.

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