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3 years ago

If a 5 kg bowling ball is lifted to a height of 2 meters, how much potential

Physics

1 answer:

natka813 [3]3 years ago

8 0

Answer:

$\boxed {\boxed {\sf 98.1 \ Joules}}$

Explanation:

The formula for potential energy is:

$E_p=mgh$

where m is the mass, g is the gravitational acceleration, and h is the height.

The mass is 5 kilograms and the height is 2 meters. Assuming this ball is on Earth, then the gravitational acceleration is 9.81 meters per square second.

$m= 5 \ kg \\g= 9.81 \ m/s^2 \\\h= 2 \ m$

Substitute the values into the formula.

$E_p= ( 5 \ kg )(9.81 \ m/s^2)( 2 \ m)$

Multiply the first two numbers.

$E_p=49.05 \ kg*m/s^2 (2 \ m )$

Multiply again.

$E_p= 98.1 \ kg*m^2/s^2$

1 kilogram square meter per square second is equal to 1 Joule.
Our answer is equal to 98.1 Joules

$E_p= 98.1 \ J$

The ball has 98.1 Joules of potential energy.

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A boy starting from rest, slides down a snowy hill on a sled. He travels 174.19 m to the bottom of the hill. He accelerates

AfilCa [17]

Answer:

11.6 s

Explanation:

We can use equation of motiom to solve this

$s = ut + \frac{1}{2} a {t}^{2 } \\ 174.19 = (0)t + \frac{1}{2} (2.61){t}^{2 } \\ t = 11.6s$

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3 years ago

The law of universal gravitation offers a mathematical explanation for the attraction between the moon and Earth.

grandymaker [24]

Answer:

True.

Explanation:

The given statement is true that the law of universal gravitation offers a mathematical explanation for the attraction between the moon and Earth.

According to this law, the forces between two masses can be calculated by the product of their masses and divided by the square of the distance between them. Mathematically, it can be written as :

$F=\dfrac{Gm_1m_2}{r^2}$

G is universal gravitational constant

Hence, the given statement is true.

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3 years ago

Why is it important for a scientist to be open-minded but skeptical?

insens350 [35]

It’s important for a scientist to be open-minded because they need to be able to understand or creative anything that was never thought about. It’s also important for a scientist to be skeptical because some ideas or products that they hear about can have false factors. I hope this helped!

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3 years ago

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A scientist at a space research center is doing research on near-Earth objects and determining the kinetic energy of a theoretic

Marysya12 [62]

<span>its kinetic energy is 7350kJ
</span>

Kinetic energy is given as = $\frac{1}{2} mv^{2}$

Now, m = 12 gms = 0.012 kg
And, velocity = 35 kilometers/second = 35000 m/sec

Kinetic energy is given as = $\frac{1}{2} 0.012 kg * 35000*35000 m/[tex] s^{2}$
= 6 $10^{-2}$ ×1225 × $10^{6}$ m/ $s^{2}$
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4 years ago

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Which terms describe the different movements of earth? check all that apply. rotation revolution tilted orbit lunar cycle ellipt

gogolik [260]

Revolution and rotation are the terms that describe the different movements of the earth.

<h3 /><h3>What is the earth?</h3>

Our home planet is Earth. Earth and its moon, according to scientists, originated about the same period as the rest of the solar system.

That would have been around 4.5 billion years ago, according to scientists. Earth is the solar system's fifth-largest planet.

The rotation and revolution of the earth are two different movements. The movement of the earth on its axis is known as rotation.

Revolution is the movement of the earth around the sun in a fixed route or orbit. The earth's axis, which is an imaginary line, forms a 6612° angle with its orbital plane.

Hence revolution and rotation are the terms that describe the different movements of the earth.

To learn more about the earth refer to the link;

brainly.com/question/14042561

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2 years ago