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scoray [572]
3 years ago
10

What do electrons have that protons always have in equal magnitude?

Physics
1 answer:
zimovet [89]3 years ago
6 0
The both contain a nucleus. 
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If a.b= 0 what is the angle between a and b​
Vlad1618 [11]

Answer:

π/2 (90°)

Explanation:

The dot product of two vectors equals the product of their magnitudes and the cosine of the angle between them.

a·b = ||a|| ||b|| cos θ

If the dot product is 0:

0 = ||a|| ||b|| cos θ

0 = cos θ

θ = π/2

The angle between a and b is π/2 (90°).

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What is the most important safety rule to remember during lab activities? Wear gloves, goggles, and protective clothing. Follow
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All of them are but if you're looking for only one then it is follow the instructions


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Brainliest??

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4 years ago
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A distant planet with a mass of (7.2000x10^26) has a moon with a mass of (5.0000x10^23). The distance between the planet and the
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Answer:

Explanation:

This is a simple gravitational force problem using the equation:

F_g=\frac{Gm_1m_2}{r^2} where F is the gravitational force, G is the universal gravitational constant, the m's are the masses of the2 objects, and r is the distance between the centers of the masses. I am going to state G to 3 sig fig's so that is the number of sig fig's we will have in our answer. If we are solving for the gravitational force, we can fill in everything else where it goes. Keep in mind that I am NOT rounding until the very end, even when I show some simplification before the final answer.

Filling in:

F_g=\frac{(6.67*19^{-11})(7.2000*10^{26})(5.0000*10^{23})}{(6.10*10^{11})^2} I'm going to do the math on the top and then on the bottom and divide at the end.

F_g=\frac{2.4012*10^{40}}{3.721*10^{23}} and now when I divide I will express my answer to the correct number of sig dig's:

Fg= 6.45 × 10¹⁶ N

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3 years ago
A positive rod is placed to the left of sphere A ,and the spheres are separated
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When a positive rod is placed to the right of sphere B, and the spheres are separated, the reason behind this is the same charge on the sphere as the rod i.e. the right of the sphere also had a positive charge. Thus, the same positive charges could not reside on the right side surface of the sphere due to which it separation happens.

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3 years ago
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Nobel gases share which characteristics?
Leto [7]
Full outer shell of electrons, they are colorless and odorless ,their melting and boiling points are close together which gives them very narrow liquid range
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