2 years ago

List the compositional layers in order of most dense to least dense

Physics

1 answer:

Iteru [2.4K]2 years ago

7 0

Atmosphere, crust, mantle, outer core, inner core.

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If a plane has an airspeed of 40 m/s and is experiencing a crosswind of 30 m/s, what is its ground speed in m/s?

Anon25 [30]

<h2>Answer:50 $ms^{-1}$ </h2>

Explanation:

Let $v_{a}$ be the airspeed.

Let $v_{w}$ be the cross wind speed.

We know that,ground speed is the vector sum of airspeed and cross wind speed and airspeed is perpendicular to cross wind speed.

If $v_{1}$ and $v_{2}$ are two perpendicular vectors,the resultant vector has the magnitude $\sqrt{|v|_{1}^{2}+|v|_{2}^{2}}$

Given,

$v_{a}=40ms^{-1}\\v_{c}=30ms^{-1}$

So,the ground speed is $\sqrt{40^{2}+30^{2}}=\sqrt{2500}=50ms^{-1}$

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3 years ago

Your family took 6 hours to travel to your destination. The average speed for the first time 2 h 15 min was 160 km/h. For the re

Leni [432]

Answer:

3 h 45 min

Explanation:

6 - 2 = 4

4 - .15 = 3 45

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3 years ago

The dispatcher of courier service receives a message from truck A that reports a position of +5 after a displacement of +2. What

Romashka [77]

The formula we need to use is displacement.

$d=\Delta{x}=x_f-x_i$ , where xf is final position and xi is initial position.

We report the final position of 5 and the displacement of 2 so the formula is now:

$2=5-x_i\Longrightarrow x_i=3$ .

So the initial position of truck A is 3.

Hope this helps.

r3t40

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2 years ago

Is 35 miles per hour a vector or a scalar?<br> 1. vector<br> 2. scalar

lesya692 [45]

Answer:

scalar

is the correct answers

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