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Kruka [31]
3 years ago
5

The law of universal gravitation states that a gravitational force exists between all objects in the universe. This force is dir

ectly proportional to the masses of the two objects and inversely proportional to the distance between them. This principle is a law because A. it is contradictory to ideas proposed by other scientists. B. it is subject to change as new technology and evidence emerges. C. it cannot be tested through a controlled scientific investigation. D. it has been demonstrated to be without exception under certain stated conditions.
Physics
1 answer:
Ber [7]3 years ago
3 0

Answer: D. it has been demonstrated to be without exception under certain stated conditions.

Explanation:

A <u>Law</u> is an affirmation (something established) based on repeated long-term observation of a phenomenon that has been studied and verified.  

That is: A law is present in all known theories and therefore is considered universal. In addition, a law can not be refuted, nor changed, because its precepts have been proven through various studies.  

<u>Unlike theory</u>, which is the set of rules and principles that describe and explain a particular phenomenon and <u>is subject to changes as new evidence emerges that gives meaning to it.  </u>

Then, based on what is explained above, the law of universal gravitation is a statement that exists because it was rigorously tested and verified, therefore it can not be refuted.

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If swimmers had a choice of the water slides shown in this figure,
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4 0
3 years ago
What color will the paper appear? Explain why?
Evgen [1.6K]

Answer:

The answer is B

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6 0
2 years ago
A car starts from rest and accelerates uniformly for a five seconds along a straight road. If speed obtained by the car is 72 km
Step2247 [10]

Answer:

50 meters

Explanation:

Let's start by converting to m/s. There are 3600 seconds in an hour and 1000 meters in a kilometer, meaning that 72km/h is 20m/s.

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Since the car starts at rest, you can write the following equation:

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Now that you have the acceleration, you can do this:

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Once again, there is no initial velocity:

d=\dfrac{1}{2}(4)(5)^2=2 \cdot 25=50m

Hope this helps!

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