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3 years ago

14

What is one advantage of reflecting telescopes? a they have two focal points. b they focus all colors perfectly. c they touch up

images. d they use smaller mirrors?

1 answer:

artcher [175]3 years ago

5 0

If I'm not mistaken it's b

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If the speed of an object increases, the kinetic energy will ______________ because _____________________________________.

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A firecracker in a coconut blows the coconut into three pieces. Two pieces of equal mass fly off south and west, perpendicular t

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Explanation:

Let us assume that piece 1 is $m_{1}$ is facing west side. And, piece 2 is $m_{2}$ facing south side.

Let $m_{1} \text{and} m_{2}$ = m and $m_{3}$ = 2m. Hence,

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$v_{3x} = \frac{21}{2}$

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= 14.84 m/s

or, = 15 m/s

Hence, the speed of the third piece is 15 m/s.

Now, we will find the angle as follows.

$\theta = tan^{-1} (\frac{v_{3y}}{v_{3x}})$

= $tan^{-1}(\frac{10.5}{10.5})$

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4 years ago

A speeding car traveling at 24.8 m/s passes a police car that is at rest. The police car begins its pursuit at the instant the s

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Answer:

the acceleration required is 1.37m/s^2

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igor_vitrenko [27]

<span>northwest Australia between Exmouth and Broome in Western Australia and in northeast Queensland between Port Douglas and Maryborough</span>

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