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tester [92]
3 years ago
10

The answer and why it's that one

Physics
1 answer:
scoundrel [369]3 years ago
3 0
The force between two magnets, the gravitational forces between two objects,
and the forces between two charged particles DON't require that the objects
be touching each other.

The forces of friction between an object and air, or the forces of friction
between two objects that are sliding, DO only happen when the two are
in contact with each other.
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The significant feature of a Cepheid variable is that there is a relationship between two intrinsic parameters, one of which can
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Answer:

Period of brightness variation and luminosity.

Explanation:

The Cepheid variables are used as distance indicators. This requires estimation of periods and (usually) intensity-mean magnitudes in order to establish a period—apparent luminosity relation. It is particularly important for the techniques employed to be as accurate and efficient as possible.

5 0
2 years ago
A car accelerates from 13 m/s to 25 m/s in 5.0 s. assume constant acceleration. what was its acceleration?
natima [27]
<span>a = 25-13/6  = 12/6 = 2 m/s^2
Av speed: 25+13/2 = 38/2  = 19 m/sec
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8 0
3 years ago
Según el diagrama anterior, ¿cómo se forman las rocas metamórficas?
torisob [31]

Answer:

A

Explanation:

3 0
3 years ago
How much energy (in kilojoules) is required to convert 200 mL of diethyl ether at its boiling point from liquid to vapor if its
LiRa [457]

Answer:

55.96kJ

Explanation:

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Energy = 142.76g × 0.392kJ/g = 55.96kJ

4 0
3 years ago
The muscular system and the skeletal system of the human body work together to
AlladinOne [14]
 A. Allow movement.  
Muscles connect to your skeleton and they contract and move the skeleton along. <span>They help the process of movement happen in a smoother manner.</span>
4 0
2 years ago
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