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Trava [24]
3 years ago
7

Einstein's theory of relativity is currently the best explanation of gravity. What is likely to happen to this theory in the fut

ure?
A.It will be replaced by a new theory when popular opinion changes.
B.It will become a law when there is consensus among scientists 
C.It will be replaced by a new theory when enough evidence is collected
D.It will become a law when enough evidence is supported
Physics
2 answers:
Trava [24]3 years ago
8 0
I believe the answer is C
koban [17]3 years ago
5 0

Answer:

D. It will become a law when enough evidence is supported.

Explanation:

Based on observations of natural phenomenon, a possible scientific explanation is written and tested. If the results are positive, it becomes a theory. If enough evidence is gathered and can be used generally, it becomes a law. For example Newton's laws of motion are used to describe all kinds of motion on Earth.

Einstein's theory of relativity cannot be tested directly but it's indirect evidence can be gathered because it deals with speeds near to the speed of light and space-time curve.

Thus, when the scientists would gather more evidence in future supporting Einstein's theory of relativity, it would be converted to law.

Option D. is correct.

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Sholpan [36]

Using the 3rd equation of motion:

= v² - u² = 2gs ------ [g = Acceleration due to gravity]

= v² - 20² = 2 × 10 × 300

= v² - 400 = 6000

= v² = 6000 - 400

= v = √5600

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8 0
3 years ago
Two satellites A and B orbit the Earth in the same plane. Their masses are 5 m and 7 m, respectively, and their radii 4 r and 7
Dmitry [639]

Answer:

The ratio of their orbital speeds are 5:4.

Explanation:

Given that,

Mass of A = 5 m

Mass of B = 7 m

Radius of A = 4 r

Radius of B = 7 r

The orbital speed of satellite A,

v_{A}=\sqrt{\dfrac{GM_{A}}{R_{A}}}......(I)

The orbital speed of satellite B,

v_{B}=\sqrt{\dfrac{GM_{B}}{R_{B}}}......(I)

We need to calculate the ratio of their orbital speeds

Using equation (I) and (II)

\dfrac{v_{A}}{v_{B}}=\sqrt{\dfrac{\dfrac{GM_{A}}{R_{A}}}{\dfrac{GM_{B}}{R_{B}}}}

Put the value into the formula

\dfrac{v_{A}}{v_{B}}=\sqrt{\dfrac{G\times5m\times7r}{G\times7m\times4r}}

\dfrac{v_{A}}{v_{B}}=\dfrac{5}{4}

Hence, The ratio of their orbital speeds are 5:4.

8 0
3 years ago
You and your little cousin sit on a see-saw. You sit 0.5 m from the fulcrum, and your cousin sits 1.5 m from the fulcrum. You we
svetoff [14.1K]

Answer:

200N

Explanation:

0.5/1.5=x/600N

1/3=x/600

x=200N

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Answer:

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The reckless risk taking found among many adolescents is most likely due to the effects of        <span>Peer pressure</span>
8 0
3 years ago
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