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4 years ago

What is the potential energy of a 2 kg mass at a height of 40 meters?

Physics

1 answer:

nikklg [1K]4 years ago

7 0

Answer:

The potential energy of a 2 kg mass at a height of 40 meters is 784 J

Explanation:

Potential energy is that energy that a body possesses due to the height at which it is located and whose unit of measurement of the International System of Units is the joule (J).

The potential energy of a body is the result of multiplying its mass by its height and by gravity:

Ep=m*g*h

Potential energy Ep, is measured in joules (J), mass m is measured in kilograms (kg), gravity, g, in meters / second-squared ( $\frac{m}{s^{2} }$ ), and height, h , in meters (m).

In this case:

Ep=?
m= 2 kg
g= 9.8 $\frac{m}{s^{2} }$
h= 40 m

Replacing:

Ep= 2 kg* 9.8 $\frac{m}{s^{2} }$ * 40 m

Solving:

Ep= 784 J

The potential energy of a 2 kg mass at a height of 40 meters is 784 J

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choli [55]

Answer:

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Explanation:

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4 years ago

which of the following astronomers introduced the most widely accepted hypothesis regarding the origin of the solar system?

Oksanka [162]

The astronomers introduced the most widely accepted hypothesis regarding the origin of the solar system is Immanuel Kant in 1755.

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Due to the gravitational pull of one another, these particles were drawn to one another.

In his 1755 "The Universal Natural History and Views of the Heavens," Kant discusses astronomy as well as two significant cosmological theories. The first is his "Nebular Hypothesis" on the formation of stars and planets, in which he proposed that faint, thin clouds of dust and gas far out in space would collapse in on themselves under the influence of gravity, forcing them to spin to form a disc. The development of stars and planets from this rotating disc would account for the rotation of Earth and the other planets.

To learn more about Nebular Hypothesis refer the link:

brainly.com/question/27986174

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2 years ago

A tennis ball bounces on the floor three times. If each time it loses 11% of its energy due to heating, how high does it rise af

aalyn [17]

Answer:

h = 3.10 m

Explanation:

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$E_2 = 0.89(0.89 E)$

After third bounce the energy is

$E_3 = (0.89)(0.89)(0.89)E$

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now let say final height is "h" so after third bounce the energy is given as

$E_3 = mgh$

now from above equation we have

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$h = 0.705H$

$h = 0.705(4.4 m)$

$h = 3.10 m$

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3 years ago

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Tresset [83]

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4 years ago

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MissTica

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3 years ago