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ki77a [65]
3 years ago
12

20. I am a noble gas with 2 electrons.

Physics
1 answer:
madam [21]3 years ago
8 0

Answer:

20.helium

21.silicon

hope this helps :)

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A student throws a small rock straight upwards. The rock rises to its highest point and then falls back down. How does the speed
Vladimir [108]

Answer:

we assume that it starts with a velocity of 10m/s. At 2m height above ground level, its velocity decreases at 3m above ground level

for its way down the velocity at 3m on its way down is more than its velocity at 2m on its way down.

Explanation:

A student throws a small rock straight upwards. The rock rises to its highest point and then falls back down. How does the speed of the rock at 2m on the way down compare with its speed at 2m on the way up?

It decreases in speed on its way down and increases in speed on its way down.

it decreases in speed on its way up because the the vertical motion is against the earths gravitational pull on an object to the earth's center

.It increases in speed on his way down because its under the influence of gravity

from newton's equation of motion we can check by

using V^2=u^2+2as

we assume that it starts with a velocity of 10m/s. At 2m height above ground level, its velocity decreases at 3m above ground level

for its way down the velocity at 3m on its way down is more than its velocity at 2m on its way down.

5 0
3 years ago
Can anybody help me please?
vovangra [49]

Answer:

1,2,5

Explanation:

7 0
2 years ago
How is it possible for a single sedimentary rock to contain rock particles animal shells and minerals that crystallized from wat
shutvik [7]
"Sedimentary rocks are types of rock that are formed by the deposition of material at the Earth's surface and within bodies of water. Sedimentation is the collective name for processes that cause mineral and/or organic particles (detritus) to settle and accumulate or minerals to precipitate from a solution."
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3 years ago
Read 2 more answers
What is the voltage in an electric current?
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It is the energy of the electrons I believe
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ummmmmmmmmm through science??

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