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barxatty [35]
3 years ago
6

In a clock, the average speed is maximum for the tip of

Physics
2 answers:
seraphim [82]3 years ago
7 0
The answer is A) seconds hand
aleksandrvk [35]3 years ago
7 0
A) Seconds hand

There are 60 minutes in an hour, 1 hour in an hour, and 3,600 seconds in an hour. Since there are more seconds in an hour than minutes, the seconds hand moves at a much quicker rate than the other two hands.
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What are graphs used for?
kari74 [83]

A line that joins dots plotted on a graph paper is called a line graph. It is used to show the variation of a quantity with respect to another. A line graph represents two pieces of information that are usually related.

Taking the perspective of a student learning astronomy or physics, graphs are useful because they can summarize a LOT of information into one picture. When scientists do research graphs are often the only way to represent data that has been collected.

plz mark me as brainliest if this helped :)

3 0
3 years ago
The concept of critical density is just like the idea of escape velocity for a projectile launched from the earth. An object lau
ikadub [295]

Answer:

v = √ 2 G M/ R_{e}

Explanation:

To find the escape velocity we can use the concept of mechanical energy, where the initial point is the surface of the earth and the end point is at the maximum distance from the projectile to the Earth.

Initial

        Em₀ = K + U₀

Final

        Em_{f} =  U_{f}

The kinetic energy is k = ½ m v²

The gravitational potential energy is U = - G m M / r

r is the distance measured from the center of the Earth

How energy is conserved

       Em₀ =  Em_{f}

       ½ mv² - GmM / R_{e} = -GmM / r

       v² = 2 G M (1 /  R_{e} – 1 / r)

       v = √ 2GM (1 / R_{e} – 1 / r)

The escape velocity is that necessary to take the rocket to an infinite distance (r = ∞), whereby 1 /∞ = 0

        v = √ 2GM /  R_{e}

5 0
3 years ago
Which chemical can be toxic to the cells of it’s not removed?
masya89 [10]
Hey There,

Question: <span>Which chemical can be toxic to the cells of it’s not removed?

Answer: D. Carbon Dioxide

If This Helps May I Have Brainliest?</span>
5 0
3 years ago
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Why do areas north of the artic circle in tje northern hemisphere experience a polar day lasting for several months during summe
adell [148]
<span>The regioin is titled towqrd the Sun during polar day.  (C)

(The same exact thing happens in areas south of the Antarctic Circle 
in the southern hemisphere.  The only difference is that the whole thing
is spelled better in the South.)</span>
7 0
3 years ago
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Why is radiation fog more likely near the center of an anticyclone than near the center of a cyclone?
Zigmanuir [339]
Radiation fog is the fog that is formed when the heat absorbed the Earth's surface is released into the atmosphere producing fog. This only occurs when the air is clear and calm. In the center of an anticyclone, the conditions of the air are clear and calm which is favorable for the formation of radiation fog. The center of cyclones, on the other hand, is turbulent and cloudy which prevents the formation of radiation fogs.
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3 years ago
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