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1 year ago

A 25kg child resting at the top of a 2 meter slide has how much potential energy?

Physics

1 answer:

levacccp [35]1 year ago

3 0

Potential energy of a child at the top is 490 J.

Potential energy, U = mgh

U = potential energy

m = mass of an object, given = 25kg

g = acceleration due to gravity, given = 9.8 m/ $s^{2}$

h = height of an object, given = 2 meter

Put the values in potential energy formula, U = mgh

U = mgh

U = 25 × 9.8 × 2

U = 490 J

Hence, Potential energy of a child at the top is 490 J.

Potential energy is the type of energy, which is product of mass of an object, acceleration due to gravity and height of an object where it is placed. Its S.I. unit is joule and is represented by J.

Learn more about potential energy here:- brainly.com/question/14427111

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3 years ago

A camera is equipped with a lens with a focal length of 34 cm. When an object 2.4 m (240 cm) away is being photographed, what is

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Answer:

The magnification is -6.05.

Explanation:

Given that,

Focal length = 34 cm

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Where, u = distance of the object

v = distance of the image

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Put the value into the formula

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$\dfrac{1}{u}=\dfrac{103}{4080}$

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The magnification is

$m = \dfrac{-v}{u}$

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3 years ago

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4 years ago

What is the magnitude and direction (right or left) of the

Sunny_sXe [5.5K]

Answer: 12 N to the right

Explanation:

If we calculate the net force acting on the box, we will have:

In y-component:

$Fy_{net}=F_{n}+F_{g}$ (1)

Where $F_{n}=12 N$ is the Normal force, directed upwards and $F_{g}=-12 N$ is the weight of the box (gravity force), directed downwards.

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$Fx_{net}=F_{left}+F_{right}$ (4)

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3 years ago

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3 years ago