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GaryK [48]
3 years ago
13

2. An airplane traveling north at 220. meters per second encounters a 50.0-meters-per-second crosswind

Physics
1 answer:
Alex777 [14]3 years ago
5 0

The resultant speed of the plane  is (3) 226 m/s

Why?

We can calculate the resultant speed of the plane by using the Pythagorean Theorem since both speeds are perpendicular (forming a right triangle).

So, calculating we have:

ResultantSpeed=\sqrt{VerticalSpeed^{2}+HorizontalSpeed^{2}}\\\\ResultantSpeed=\sqrt{(220\frac{m}{s})^{2}+50\frac{m}{s})^{2}

ResulntantSpeed=\sqrt{48400\frac{m^{2} }{s^{2} }+2500\frac{m^{2} }{s^{2} } } \\\\ResultantSpeed=\sqrt{50900\frac{m^{2} }{s^{2} }}=226\frac{m}{s}

Hence, we have that the resultant speed of the plane  is (3) 226 m/s

Have a nice day!

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g A point source of light is submerged 2.5 m below the surface of a lake and emits rays in all directions. On the surface of the
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Answer:

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Explanation:

For this case the situation is explained in the figure attached.

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sin (x_i)= \frac{n_{air} sin (90)}{n_{water}}= \frac{1*1}{1.333}= 0.75

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x_i = arcsin(0.75) =48.61

And now we can find the maximum radius replacing into

r= d tan(x_i)

And we got:

r= 2.5 m tan(48.61) = 2.84m

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3 years ago
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Answer:

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Germanium to which 1024 m-3 Ga atoms have been added is an extrinsic semiconductor at room temperature, and virtually all the Ga
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Answer:

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