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4 years ago

A 20. cm telescope collects how many times the light collected by a 5.0 cm telescope?

1 answer:

5 0

The light collected by a telescope is proportional to the area of the telescope.

The area of a telescope is π * (Diameter / 2) ^2 = π * (Diameter)^2 / 4.

So, for the 20.0 cm telescope, area = π * (20.0cm)^2 / 4.

And for the 5.0 cm telescope, area = π * (5.0 cm)^2 / 4

So, divide both expressions to find the ratio of collection of light of one telescope to the other:=> (20.0)^2 / (5.0)^2 = (20.0 / 5.0)^2 = 4^2 = 16

Then, the 20.0 cm telescope collects 16 times the ligth that the 5.0 cm telescope collect. <--- answer

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He can throw it away from himself.

Explanation:

Newtons Third Law says that everything has an equal, yet opposite reaction on other objects.

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3 years ago

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Statistical time division multiplexing does not require the capacity of the circuit to be equal to the sum of the combined circu

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Answer:

The answer is True

Explanation:

Statistical Multiplexing is considered an example of communication link sharing which makes it comparable to DBA (Dynamic Bandwidth Allocation). Here, communication channels are broken down into data streams to optimize the communication process.

In Statistical Time-division Multiplexing, time slots are allocated to data streams for communication optimization. This method makes sure that no time slot or bandwidth is wasted.

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3 years ago

A particle traveling in a circular path of radius 300 m has an instantaneous velocity of 30 m/s and its velocity is increasing a

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Answer:

5 m/s2

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4 years ago

While in a car at 4.47 meters per second a passenger drops a ball from a height of 0.70 meters above the top of a bucket how far

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1.7 m

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$s_y=u_yt+\dfrac{1}{2}gt^2\\\Rightarrow 0.7=0+\dfrac{1}{2}\times 9.81t^2\\\Rightarrow t=\sqrt{\dfrac{0.7\times 2}{9.81}}\\\Rightarrow t=0.38\ \text{s}$

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The passenger should throw the ball 1.7 m in front of the bucket.

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3 years ago

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