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JulijaS [17]
3 years ago
13

A example of a substance that has low pH is

Physics
1 answer:
iren2701 [21]3 years ago
6 0

Answer:

lemons, which have a pH of 2 choice a

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In the four terrestrial planets, the densest, heaviest materials are at the center and not evenly distributed throughout the pla
Gala2k [10]

<em>The question is incomplete. Please read below the missing content.</em>

B) The 4 terrestrial planets have to as soon as were hot sufficient to be molten (like a liquid).

Terrestrial planets may be described as any planet of the sun machine or any exoplanet that is "Earth-like" in the experience that it is composed primarily of metals and rock, in evaluation to a planet that's a fuel large.

In the sun machine, the terrestrial planets are the inner planets closest to the solar, i.e. Mercury, Venus, Earth, and Mars.

Scientists believe that the densest, heaviest substances are at the center and not evenly allotted can be due to the truth that they need to once be warm enough to be molten. In this example, density will take region, making the heavier below and the lighter on the pinnacle.

In the four terrestrial planets, the densest, heaviest materials are at the center and not evenly distributed throughout the planet. Scientists interpret this observation to mean that:

a.the four terrestrial planets must once have been inside the Sun

b.the four terrestrial planets must once have been hot enough to be molten (like a liquid)

c.the four terrestrial planets must have formed where Jupiter and Saturn now are

d.the four terrestrial planets must have collided with each other many times

e.none of the above

Learn more about terrestrial planets here brainly.com/question/11862047

#SPJ4

3 0
2 years ago
A 0.4 kg soccer ball approaches a player with a velocity of 18 m/s to the east. The player strikes
Zigmanuir [339]

Answer:

16Newton sec

Explanation:

Ft = m( v + u)

= 0.4( 22 + 18)

= 0.4 x 40

= 16newton sec

7 0
3 years ago
When the cart moves on an incline at constant speed, it is in equilibrium; i.e., the net force on it is zero. Does it require mo
Amanda [17]

Answer:

It requires more tension to pull up the track

Explanation:

Net force must be zero to maintain constant velocity.

Weight force will always be pointed down the slope. Call it W

Friction force (Call it Ff) will be down slope when movement is up slope.

Friction force will be up slope when movement is down slope.

W and Ff are always positive numbers

Call the pulling force T

If Up slope is considered the positive direction

Moving up slope

Tu - Ff - W = 0

Tu = Ff + W

Moving down slope

Td + W - Ff = 0

Td = Ff - W

Ff + W > Ff - W therefore Tu > Td

5 0
3 years ago
Gas pressure in a closed system is caused by___. A. Heat given off by constant collisions.. B. Compression of the gas. C. Result
jekas [21]
Gas pressure in a closed system is caused by resultant force of all combines collisions. The correct option among all the options that are given in the question is the third option or option "C". The other options can easily be ignored. I hope the answer comes to your help.
8 0
3 years ago
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What is happening to this sound is that it’s vibrating over and over.
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