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laila [671]
3 years ago
7

The pH of normal rainwater is _____. A. acidic B. neutral C. basic

Biology
2 answers:
qwelly [4]3 years ago
5 0
The answer is A. acidic
NNADVOKAT [17]3 years ago
5 0

Answer: A. Acidic

Explanation:

The pH can be define as a scale which specific that acidity or alkalinity of a water based solution. Acidic solution shows low pH value whereas the basis solution shows a higher pH value. Those solutions which does not show neither acidity nor alkalinity they are called as neutral solutions. They exhibit a pH value of 7, acidic solutions show a pH value below 7 and the alkaline solutions show a pH value above 7.

The pure water shows a pH of 7 that means it is neutral but a normal rainwater can be little acidic due to the presence of sulfates and carbonates in it. The pH value of a normal rain is 5.6.

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Assume that the body has been sectioned along three planes: (1) a median plane, (2) a frontal plane, and (3) a transverse plane
Anit [1.1K]

Answer:

lungs and kidneys

Explanation:

The median plane divides the body into two halves through a mid line.

The transverse plain is also known as the axial plane and it divided the body into the upper part and a lower part.

The frontal plane is also known as the coronal plane. It divided the body into the dorsal and ventral sections. The dorsal and ventral sections are the front and back sections ( belly and back).

Lungs and kidneys are the only parts which cannot be seen through all the three plains.

6 0
4 years ago
True or false? variation in human skin color is an example of clinal variation.
ICE Princess25 [194]
The answer is false,it comes from genes that you get from both your parents
4 0
4 years ago
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

4 0
3 years ago
Name the substances excreted by skin glands. is the skin an important site of excretion
pychu [463]
Sebum, a fatty substance that serves as a water repellent it also serves as a natural antibacterial and antifungal agent,
yes the skin is important not only to excrete but its also a protective organ that absorbs oxygen and nitrogen
5 0
4 years ago
You have two carts, one which is empty and has mass m. The second cart is of the same mass but
Ahat [919]

Their kinetic energies would be the same. The cart is empty and has a mass m. The second cart is of the same mass but loaded with twice the mass of the empty cart. 1 joule of work or energy is equal to the work done by a force of one newton acting through one meter.

<h3>What is kinetic energy? </h3>

A moving item or particle might have the power of a certain sort called kinetic energy. When work, which entails the transfer of energy, is done on an object by applying a net force, that object acquires kinetic energy. Kinetic energy, which depends on an item or particle's mass and velocity of motion, is a property of motion. Any combination of vibration, axis rotation, translation (or movement along a route from one place to another), and translation are all examples of motion.

The kinetic energy of each would be equal.

This is because the force, F, acting on them moves the same distance, d, hence the work done by the force is W = Fd.

Using the ideas of work-kinetic energy, let's now

W = K, where K is the difference in the kinetic energy of the carts.

Given that the effort done was the same for both carts, the change in kinetic energy would also be equal.

Since they start at rest, K = K' - K = K' - 0 = K'.

Therefore, the kinetic energies of the carts would be the same.

Read more about kinetic energy, here

brainly.com/question/12669551

#SPJ1

7 0
1 year ago
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