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Mars2501 [29]
2 years ago
9

What scientific observation did Edwin Hubble use to determine distances between galaxies?

Physics
1 answer:
Cerrena [4.2K]2 years ago
7 0

Answer: the expanding universe

Explanation:

Hope that helps!

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what conversion factors should be used to convert 18 mi/hr to ft/sec? what conversion factors should be used to convert 18 mi/hr
trasher [3.6K]
The conversion that should be made for this certain problem would be from miles to feet and from hours to second. The conversion of miles to feet would have a factor of 5280. For hours to second the factor would be 3600. Hope this answers the question.
7 0
3 years ago
Some magnets have just one pole <br> Truth or false ?
leva [86]
False

-A magnet can never have one pole, even a simple magnet was cut, each end would have an opposite south(-) or north(+) pull.
-This is the result of moving electrons
3 0
3 years ago
Read 2 more answers
A girl throws a tennis ball upward with an initial velocity of 4 m/s. What is the maximum displacement of the ball?
Jobisdone [24]

Answer:

0.82 m

Explanation:

The ball is in free fall - uniform accelerated motion with constant acceleration downward, a=g=-9.8 m/s^2 (acceleration of gravity). So we can use the following suvat equation to solve the problem:

v^2-u^2=2as

where

v is the final velocity

u = 4 m/s is the initial velocity

a is the acceleration

s is the displacement

At the maximum displacement, v = 0 (the velocity becomes zero). Substituting and solving for s, we find:

s=-\frac{u^2}{2a}=-\frac{4^2}{2(-9.8)}=0.82 m

8 0
2 years ago
In​ physics, it is established that the acceleration due to​ gravity, g (in meters divided by sec squared) in meters/sec²​, at a
kompoz [17]

Answer:

g(h)=9.81943\ m/s^2

Explanation:

The given function is

g(h)=\dfrac{3.99\times 10^{14}}{(6.374\times 10^6+h)^2}

Now h = the height from the surface of the Earth

Here the building is 458 m tall

g(458)=\dfrac{3.99\times 10^{14}}{(6.374\times 10^6+458)^2}

\Rightarrow g(458)=9.81943\ m/s^2

So,

g(h)=9.81943\ m/s^2

5 0
3 years ago
Please answer it fast and correctly​
ivanzaharov [21]

Answer:

(1) chess is played by him

(2) The great black engine was seen by her

(3) Arrangements for functions had been made by him

(4) A meeting is being attended by Raman

= when the last of the guests left, I went back into the hall to look for my mobile phone that I had kept on the table, I found that my mobile phone was not there. I felt freaked and I asked to every member of my family about my phone, but nobody had idea about that. then there was a phone call made by my uncle to my father, that his son had taken the mobile by mistake. After sometime, My uncle came to return my mobile. Then I took a sigh of relief .

please mark me as a brainelist

3 0
3 years ago
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