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AleksandrR [38]

2 years ago

6

A girl is x years old and her brother is 5 years older than her. (1) Find the sum of their ages. (2) If their father is 25 years

older than the girl, what is the difference between the zum of yhe children's age and their fathers age

1 answer:

Valentin [98]2 years ago

6 0

1) Sum = x + (x+5) = 2x + 5 years

2) Difference = 2x + 5 - (x + 25) = 2x + 5 - x - 25 = x -20

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lana66690 [7]

Answer:

The potential energy of the ball having 2kg mass would be $392$ J

Step-by-step explanation:

I am assuming the ball has a mass of 2 kg, as you have not mentioned the mass of a ball.

Considering the formula for calculating the gravitational potential energy

$G.P.E\:=\:m.g.h$

As

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Acceleration of gravity = g = 9.8 $ms^{-2}$

As the ball is on the height = h = 20 meters

So,

$G.P.E\:=\:(2)(9.8)(20)$

$G.P.E\:=392$ J

Therefore, the potential energy of the ball = $392$ J

Keywords: potential energy, Gravitation potential energy

Learn more potential energy from brainly.com/question/14022793

#learnwithBrainly

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