How will gravitational wave discovery help the scientists in their quest to fully understand gravity?

1 answer:

8 0

<span>The heavier the body is, the stronger its gravitational pull. Just like earth, we feel gravitational pull because we are attracted to earth and so is the moon. Also, the sun is heavier than the earth and therefore, we are attracted to the sun because of its gravitational pull. When the earth revolves around the sun, both of them releases gravitational waves. Gravitational waves are ripples of waves travelling outward from the source. The more massive the orbit of two bodies, the more it emits gravitational wave. And everything around it that is near within the wave experiences a ‘pull’ toward the orbiting bodies. The advantages we get when we can measure gravitational waves are; one, we can measure the activity between two bodies in orbit in the universe, two, scientist can estimate the merging of two bodies in the universe every 15 minutes by using LIGO and three, we can know the behavior of other bodies that we did not know exist.</span>

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Which would most likely cause molten rock material to become glassy igneous rock?

Ainat [17]

The cooling on earth's surface (extrusive) makes a molten rock to become glassy. The lava cools so fast that crystals don't have time to form, which makes it glassy. Hope this helps!

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The Curiosity rover now on Mars analyzed rocks and found magnesium to have the following isotopic composition.

emmasim [6.3K]

Answer:

A. number of neutrons of Magnesium Mg = 13

B. The average mass of Mg = 22.29 amu

C. the magnesium composition on Mars is not the same as that on Earth.

Explanation:

Isotopes are atoms with the same atomic number but different mass number. This is due to the difference in mass of the neutrons.

The atomic number of Magnesium Mg = 12

The atomic number of an element is the number of protons present in the atomic nucleus of the element

i.e Atomic number = number of protons = 12

The mass number of an element is the sum of the protons and neutrons in the atomic nucleus of the element.

Mass number = number of protons + number of neutrons

Given that the mass number of Mg = 25

Then;

25 = 12 + number of neutrons

25 - 12 = number of neutrons

13 = number of neutrons

number of neutrons of Magnesium Mg = 13

B. What is the average atomic mass of magnesium in these rocks?

The average atomic mass of an element which exhibit isotopy is the average mass of its various isotopes as they occur naturally in any quantity of the element.

Therefore the average atomic mass of magnesium can be calculated as:

= $\mathtt{\dfrac{(23.9872 \times 79.70) + ( 24.9886 \times 10.13) + (25.9846 \times 10.17) }{79.7 + 10.13 +10.17}}$

= $\mathtt{\dfrac{(1911.77984) + ( 53.134518) + (264.263382) }{100}}$

= $\mathtt{\dfrac{2229.17774 }{100}}$

The average mass of Mg = 22.29 amu

C. Is the magnesium composition on Mars the same as that on Earth? Explain.

The average atomic weight of magnesium on Earth is said to be 24.305 amu while that of Mars is 22.29 amu.

There difference in the average atomic weight result into difference in their composition. Therefore,the magnesium composition on Mars is not the same as that on Earth.

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Please someone derive 3rd equation of motion u- v= 2sa

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We know

$\\ \sf\longmapsto a=\dfrac{dv}{dt}$