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Troyanec [42]
3 years ago
13

Egocentrism exists during which of Piaget's stages?

Physics
1 answer:
Goryan [66]3 years ago
7 0

Answeri believe it is the first one but not sure

Explanation:

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How many atoms are there
yuradex [85]

Answer:

10^80 i think, scientists say so.

Explanation:

i pretty much just need points and i'm pretty sure you can look this up

4 0
3 years ago
A soccer ball is kicked with an initial horizontal velocity of 12 m/s and an initial vertical velocity of 19 m/s. 1 what is the
alex41 [277]
22.4722050542442 maybe I am not completely sure
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How is wave movement affected by the various mediums it may travel through?
Juliette [100K]

Answer:

speed is affected by the medium in wich the wave travels.

Explanation:

The speed of a wave is affected when traveling in different medium, depending on the medium in which the wave travels it can go faster or slower, or not even be able to travel in that medium.

For light waves, the denser the medium through which the wave travels, the slower it will go through it, as there is more resistance to the light particles.

And in waves like sound, which instead of particles is a vibration or disturbance in the medium, they travel faster in denser mediums such as metal, because the disturbance is transmitted more efficiently thanks to how close together that the particles are in the metal, This is why sound does not travel in a vacuum; there are not even particles to transmit the vibration.

5 0
3 years ago
A roller coaster is released from the top of a track that is 57 m high. Find the roller coaster speed when it reaches ground lev
Art [367]

Hi there!

Assuming the track is frictionless:

E_i = E_f\\\\PE = KE\\\\mgh = \frac{1}{2}mv^2

Cancel out the masses and rearrange to solve for velocity:

gh = \frac{1}{2}v^{2}\\\\v = \sqrt{2gh}\\\\

Plug in the given height and let g = 9.8 m/s²:

v = \sqrt{2(9.8)(57)} = \boxed{33.42 m/s}

7 0
3 years ago
Move the red arrow onto the picture to show how you think warm air would move over this area of land and water on a dark cold ni
Bess [88]
There’s no pictures?
7 0
2 years ago
Read 2 more answers
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