3 years ago

Why will many of the very large telescopes of the future make use of multiple mirrors?

1 answer:

3 0

<span>Adoptive optics, in which it’s a lot easier for a computer to constantly monitor and change the shape of multiple thin mirrors than it is to use a telescope with a large thick mirror that has to thermally adjust before being able to focus sharply and even then a large mirror or lens cannot compensate for air turbulence the way telescope with computer controlled adaptive optics can. </span>

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Suppose the ring rotates once every 4.30 ss . If a rider's mass is 58.0 kgkg , with how much force does the ring push on her at

Stells [14]

Answer:

422.36 N

Explanation:

given,

time of rotation = 4.30 s

T = 4.30 s

Assuming the diameter of the ring equal to 16 m

radius, R = 8 m

$v = \dfrac{2\pi R}{T}$

$v = \dfrac{2\pi\times 8}{4.30}$

v = 11.69 m/s

now, Force does the ring push on her at the top

$- N - m g = \dfrac{-mv^2}{R}$

$N + m g = \dfrac{mv^2}{R}$

$N = \dfrac{mv^2}{R}- m g$

$N = m(\dfrac{v^2}{R}- g)$

$N = 58\times (\dfrac{11.69^2}{8}- 9.8)$

N = 422.36 N

The force exerted by the ring to push her is equal to 422.36 N.

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3 years ago

Assuming all object are moving with the same velocity, witch statement describes the object with the largest intertia?

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Answer:

Mass is the quantitative measure of inertia of any object.

Explanation:

The object that have largest mass will have largest inertia as well as largest momentum.

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3 years ago

How does Doppler ultrasound technology differ from ultrasound technology

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I think the answer would be 70

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