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Marrrta [24]
3 years ago
12

Lamar writes several equations trying to better understand potential energy. What conclusion is best supported by Lamar’s work?

The elastic potential energy is the same for any distance from a reference point. The gravitational potential energy equals the work needed to lift the object. The gravitational potential energy is the same for any distance from a reference point. The elastic potential energy equals the work needed to stretch the object.
Physics
2 answers:
faust18 [17]3 years ago
7 0
Its B i got it right on the test
ehidna [41]3 years ago
3 0
<h2>Answer:</h2>

The correct answer is B.

B. The gravitational potential energy equals the work needed to lift the object.

<h2>Explanation:</h2>

Lamar writes several equations trying to best understand potential energy. The conclusion of his work is "The gravitational potential energy equals the work needed to lift the object".

<h2 />
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ryzh [129]

Answer:

The answer to your question is: 20

Explanation:

Atomic number is the number of proton and atom has. Each element has a specific number of protons, if the number of protons change, then this is a new element.

Mass number is the number of protons and neutrons and atom has.

                       Mass number = protons + neutrons

Data

Number of protons = ?

Atomic number = 20

Then,

           atomic number = number of protons = 20

3 0
3 years ago
An electron at Earth's surface experiences a gravitational force of magnitude F=(9.11×10−31 kg)⋅(9.8 m/s2). Part A How far away
katrin [286]

Answer:

r = 5,085 m

Explanation:

The force exerted by on the surface of the Earth on an electron is its weight

          W = F = 9.11 10⁻³¹  9.8

          W = 8.9 10⁻³⁰ N

The electric force between an electron and a proton is given by Coulomb's Law

         Fe = k q₁ q₂ / r²

         Fe = - k q² / r²

They ask us that W = Fe

         W = k q² / r²

          r = √ k q² / W

Let's calculate

        r = √ 8.99 10⁹ (1.6 10⁻¹⁹)² /8.9 10⁻³⁰

        r = √ 25.86

        r = 5,085 m

Let's look for the relationship of this distance with the harmonic distance

        R / R_atomic = 5,085 / 10⁻¹⁰

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We see that this distance is 10¹⁰ times the interatomic distance, so the gravitational attraction force is very small at atomic scale

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Are the small sized gears only force, speed and distance, only speed
sesenic [268]
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3 years ago
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Answer:

The difference between rotations and revolutions is , when an object turns around an internal axis (like the Earth turns around its axis) it is called a rotation. When an object circles an external axis (like the Earth circles the sun) it is called a revolution.

Explanation:

While rotation means spinning around its own axis, revolution means to move around another object. Taking the example of the Earth, which rotates 366 times to complete one revolution around the Sun.

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solong [7]

Answer:

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7 0
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