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slava [35]
3 years ago
14

A scientific theory is:

Physics
1 answer:
aalyn [17]3 years ago
8 0
I'm almost positive the answer is a.
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Ian walks 2 km to his best friend's house, then walks 0.5 km to the library. He then makes a 2.5 km walk home. The entire walk t
earnstyle [38]

Average speed = (total distance covered) / (time to cover the distance)

Ian's total distance covered = (2km + 0.5km + 2.5km) = 5 km.

His time to cover the distance = 3 hours.

Average speed = (5 km) / (3 hrs)

Average speed = (5/3) (km/hr)

<em>Average speed = 1.67 km/hr</em>

5 0
3 years ago
Convection currents produce the heat in the Earth’s interior.
DaniilM [7]

Answer:

False

Explanation:

Convection currents do not produce heat. In fact, convection current are a method of transfer of heat, not of production. Convection occurs when there is a fluid which is heated from bottom, from an external source of heat (such as a pot of boiling water over a flame): the bottom part of the fluid becomes warmer, and so less dense than the colder part, therefore it starts moving up, and it is replaced by the colder parts of the fluid, which go down. Later, these colder parts become warmer, so they start going up, being replaced by new colder parts, etc... in a cycle. This is known as convection current, but it requires an external source of heat, it does not produce heat by itself.

8 0
3 years ago
Read 2 more answers
2) As a freshman in college, you enter a classroom hall believing it is Physics 101 and sit down. The professor says, "During th
Valentin [98]
No because you don’t learn about synthetic inventions yet in your first year
3 0
3 years ago
Please I need the answer right now will mark you brainliest ​
Dmitrij [34]

Answer:

Explanation:

what do u need help with

3 0
2 years ago
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1. Una pelota rueda hacia la derecha siguiendo una trayectoria en línea recta de modo que recorre una distancia de 10m en 5 s ,
devlian [24]

Answer:

https://youtu.be/ymHHdoCGJOU

8 0
3 years ago
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