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tigry1 [53]
3 years ago
9

Which of the following elements are non-reactive because their outer electron energy levels are full?

Physics
1 answer:
Marta_Voda [28]3 years ago
5 0
It would be Krypton, one of the noble gases. 
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The ability of a muscle group to exert sub-maximal forces against a resistance over numerous contractions is called A. muscle en
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The answer is:
 A) Muscle Endurance
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A rocket explodes as it begins to launch. As a result, the rocket is destroyed
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Answer:

probably B

Explanation:

it's not their job to sort out the cost of cleaning it up or worry about the public opinion. they should only make sure it doesn't happen again so they should find out why it happened

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How can you find the net force if two forces act in opposite directions?
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Then the magnitude of the net force is the difference between the two forces,
and its direction is the same as the direction of the greater one.


4 0
3 years ago
A small metal sphere has a mass of 0.19 gg and a charge of -23.0 nCnC. It is 10.0 cmcm directly above an identical sphere that h
RoseWind [281]

Answer:

  a = -7.29 m / s²

Explanation:

For this exercise we must use Newton's second law,

          F -W = m a

Force is electrical force

         F = k q₁ q₂ / r²

         k q₁ q₂ / r² -mg = m a

indicate that the charge of the two spheres is equal

         q₁ = q₂ = q

         a = (k q² / r² - m g) / m

         a = k q² / m r² - g

Let's reduce the magnitudes to the SI system

        m = 0.19 g (1kg / 1000 g) = 1.9 10⁻⁴ kg

        q1 = q2 = q = -23.0 nC (1C / 10⁹ nC) = -23.0 10⁻⁹ C

        r = 10.0 cm (1m / 100cm) = 0.1000 m

let's calculate

        a = 9 10⁹ (23.0 10⁻⁹)² / (0.1000² 1.9 10⁻⁴) - 9.8

        a = -7.29 m / s²

The negative sign indicates that the direction of this acceleration is downward

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3 years ago
What is one way to lower gravitational potential energy?
il63 [147K]

Answer:

decrease the height

Explanation:

height is directly proportional to the g.p.e

4 0
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