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4 years ago

Why do telescopes give modern astronomers an advantage over people in the past

Physics

1 answer:

pochemuha4 years ago

6 0

its because it allows modern astronomers the ability to see farther out and more accuratly

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An object is allowed to fall freely near the surface of a planet. The object has an acceleration due to gravity of 24 m/s2. How

Alborosie

Answer:

12 m

Explanation:

The object is in uniformly accelerated motion, so the distance covered can be found using the following suvat equation:

$s=ut+\frac{1}{2}at^2$

where

s is the distance

u is the initial velocity

t is the time

a is the acceleration

For this problem,

$g=24 m/s^2$

and

u = 0, since we are considering the first second of motion

So, substituting t = 1 s, we find

$s=0+\frac{1}{2}(24)(1)^2=12 m$

6 0

4 years ago

A ray of monochromatic light (f=5.09x10^14 hz) passes through air and a rectangular transparent block calculate the absolute ind

sasho [114]

The right answer for the question that is being asked and shown above is that: "The angle of refraction of the light ray as it enters the transparent block from air = 20 degrees." A ray of monochromatic light (f=5.09x10^14 hz) passes through air and a rectangular transparent block calculate the absolute index of refraction for the <span>medium of the transparent block </span>

3 0

4 years ago

The segment on the left has diameter 1.6 mm, and each of the segments on the right has diameter 0.4 mm. Assume the blood can be

oksian1 [2.3K]

Answer:

Explanation:

The flow entering the first segment will be the same as the flow exiting the second segment, and in both cases it will be equal to the velocity multiplied by the area of the segment. If $Flow_{a} = Flow_{b}$ and Flow = VxA, then you have:

$V_{a} x A_{a} = V_{b} x A_{b}$ (1)

You can also calculate the transversal area of each segment, because blood vessels are cylinders and you know each segment's diameter. The formula to calculate this is:

$A = \pi /4 x d^{2}$

Replacing d for each segment you have:

$Area_{a} = 2.01 mmArea_{b} = 0.13 mm$

Now, replacing these values on (1), you have:

$V_{a} x 2.01 mm = V_{b} x 0.13 mm$

$(V_{a} x 2.01 mm)/0.13 mm = V_{b}$

$15.4 x V_{a} = V_{b}$

This means that velocity in the second segment is 15.4 times the velocity in which blood entered the first segment.

5 0

3 years ago

What is the mass of a wooden block with a density 2.0 and a volume of 7.0?

Karolina [17]

Answer:

mass = 14

Explanation:

equation ; p = m / v

2 = m / 7

to get the m, your variable, by itself you would multiply 7 onto the other side of the equation, getting this;

2 * 7 = m

and 2 * 7 = 14, therefore m = 14, so your mass would be 14!

Hope this helps!

3 0

3 years ago

On Ramesh’s13th birthday, his father invited all his friends and their relatives. It was a big party with lots of food and DJs.

Lerok [7]

Answer:

The first fact to understand which carries the most weight is we share this small world. We all have such similar characteristics that if you listed them all in one column and then list traits that make each person an absolute individual, one of the lists would be liken to an encyclopedia where as the other more akin to a doodle on a napkin in comparison. Now to the question.

Explanation:

We all know inherently the rules, so to say. yes its acceptable to do as people do normally. to go outside those bounds on purpose to be a nuisance intentionally is not. like 3am loud pounding music or downright disrespect is not acceptable. because when its done that way, since we all know the unspoken rules, its is being done on purpose to annoy.

3 0

3 years ago