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bixtya [17]
3 years ago
7

Why do objects repel and attract?

Physics
1 answer:
Anarel [89]3 years ago
5 0
Objects repel and attract because of a thing called electrostatic attraction. When objects have the same charge (positive or negative), then they will repel, and if they have opposite charges then they will attract
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Formula for working maximum velocity? ​
Varvara68 [4.7K]

Answer:

v=Aω.

Explanation:

hope this helps you!!

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3 years ago
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Please Hurry<br> Find the magnitude and direction of these two vectors
daser333 [38]

Answer:

11.79 m

Explanation:

Break into horiz and vert components then add them....then use Pythag theorem for magnitude

(B is at angle 250° )

Horiz :   7.7 cos 27.8   + 16.3 cos 250 = 1.236 m

Vert  :    7.7 sin 27.8    + 16.3  sin 250 = -11.73

Mag^2 = 1.236^2 + (-11.73)^2  

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2 years ago
50 points for help on a portfolio!!! and brainliest!!
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3 years ago
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What constant acceleration is required to increase the speed of a car from 20 mi/h to 51 mi/h in 3 seconds
sdas [7]

Answer:

Explanation:

acceleration is the time rate of change of velocity

a = (51 - 20) / 3 = 10⅓ mi/hr/s

which should probably be converted to standard units.

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Marvin the Martian needs to get back home. Marvin is 321,770 m from his home on Mars. He decides the quickest way to get home is
Liono4ka [1.6K]

Answer:

y = 14238 m.    the height of the rocket is much less than this distance therefore the plan will not work.

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Let's analyze this exercise, so that the Martian's plan works, the vertical height of the body must be zero when it is more than half of the way to the planet Mars, this is so that Mars attracts it and can arrive.

Let's calculate the maximum height of the launch

          v_{y} ^2 = v_{oy}^2 - 2 g y

at the highest point v_{y} = 0

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let's calculate

          y = (1250 sin 25)² /2 9.8

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therefore the height of the rocket is much less than this distance therefore the plan will not work.

The height reached is low, so it is not necessary to take into account the variation of g with height

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