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bekas [8.4K]
3 years ago
15

PHYSICAL SCIENCE !! please help <3

Biology
1 answer:
8090 [49]3 years ago
6 0

Answer:

C. A law describes the observation, while the theory explains the how or why.

Explanation:

So in general science, an observed phenomenon is the description of the scientific law. However the explanation of the phenomenon is called a scientific theory. Which would make this answer: c.   A law describes the observation, while the theory explains the how or why.

Hope this helps!

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C. At what height would the pomegranate have the same potential energy as the melon? (1 point)
zvonat [6]

Answer:

Given a set of assumptions which are given below, the height at which the pomegranate will have the same potential energy as the melon is 39.19 meters.

Explanation:

Gravitational Potential Energy refers to the acquired innate energy of an object due to its elevation above the surface of the earth.

This energy is the result of gravitational pull or force acting on the object.

In other to determine at what height a pomegranate and a watermelon will have the same potential energy we need to know the other factors in play.

Gravitational Potential Energy (E<em>p</em>)= <em>mgh</em>

Where m = Mass (kg)

            g  =  gravitational field strength (N/kg)

            h  = height (m)

           E<em>p </em>= gravitational potential energy ( <em>j </em>)

Let us assume that the

  • An average pomegranate weighs about 0.255146Kg
  • An average melon weighs about  10Kg
  • g is always constant at 9.8 N/kg

Note that melons weight much more than pomegranates.

   

So, let's calculate for the E<em>p </em>of the melon at the height of  1 meter

E<em>p</em> = 10 x 9.8 X 1 = 98<em>j</em>  

Using the above assumptions, we do a goal seek using Microsoft Excel. Please see the attached image.

Calculation shows that the Height (h/Meters) at which the E<em>p </em>of both veggies become equal is 39.19m

This can be verified by inserting the figure and multiplying it. It can also be calculated as follows:

That is

E<em>p = 98j</em>

<em>m = </em>0.255146kg

<em>g= 9.8kg</em>

<em>h=  ?</em>

98= 0.255146 x 9.8 x <em>h</em>

98 = 2.5004308<em>h (we divide both sides by </em>2.5004308 to make h the subject matter<em>)</em>

<em>h = 98 / </em>2.5004308

<em>h = 39.1932462198</em>

Which is approximately 39.19

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2 years ago
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Answer:

The circulatory system transports blood throughout the body through the veins. The circulatory system works with the respiratory system because it transports oxygen through the body as well. It works with the digestive system because it transports waste so it can be disposed.

Explanation:

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What does this timeline suggest about the feminist movement?​
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Answer:

The movement pursued social, legal, and political equality.

Explanation:

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What three (3) factors determine the reactivity of elements? Explain and give examples of each.
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Three factors that determine the reactivity of elements are the valence electrons are the electrons in the outermost electron shell of an atom. The number of electrons in an atom's outermost valence shell governs its bonding behaviour. That is why in periodic table the elements were put together according to their numbers of valence electrons.

METALS

The most reactive kind of metallic element is a metal from Group 1 sodium or potassium.

An atom in Group 1 has only one valence electron.

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A nonmetal tends to attract another valence electrons to attain a full valence shell.

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D I believe but im not sure
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