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3 years ago

American space pilots were called astronauts. What were soviet space pilots called?.

Physics

1 answer:

Mnenie [13.5K]3 years ago

4 0

Answer:

Cosmonauts

Explanation:

As the americans are called astronauts which means star sailors and the russians (soviet space pilots) are called cosmonauts which means sailors of the universe

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I believe b 30 degrees

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3 years ago

A rope of total mass m hnd length L is suspended vertically with an object of mass M suspended from the lower end. Find an expre

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Answer:

Part a)

$v = \sqrt{xg + \frac{MLg}{m}}$

Part b)

t = 12 s

Explanation:

Part a)

Tension in the rope at a distance x from the lower end is given as

$T = \frac{m}{L}xg + Mg$

so the speed of the wave at that position is given as

$v = \sqrt{\frac{T}{\mu}}$

here we know that

$\mu = \frac{m}{L}$

now we have

$v = \sqrt{\frac{ \frac{m}{L}xg + Mg}{m/L}$

$v = \sqrt{xg + \frac{MLg}{m}}$

Part b)

time taken by the wave to reach the top is given as

$t = \int \frac{dx}{\sqrt{xg + \frac{MLg}{m}}}$

$t = \frac{1}{g}(2\sqrt{xg + \frac{MLg}{m}})$

$t = \frac{2}{9.8}(\sqrt{(39.2\times 9.8) + \frac{8(39.2)(9.8)}{1}})$

$t = 12 s$

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3 years ago

What type of image can a convex mirror produce?

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Convex mirrors only produce virtual images

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4 years ago

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In any electromagnetic wave,

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3 years ago

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Answer:

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Explanation:

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The variation of the gravitational force with height is given as:

$F'=m.g'$

where:

$g'=g\times (1+\frac{h}{R} )^{-2}$

where

R = radius of the earth $\approx64000\ km$

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3 years ago