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Marina86 [1]
3 years ago
6

For Al, its atomic number is 13 and its mass number is 27. How many neutrons does it have?

Physics
1 answer:
ira [324]3 years ago
6 0

Answer:

B.14 your welcome!

Explanation:

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Your answer here is D

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Slowly pressing your breaks will help ensure you are not hit by the other car. If they hit you its their fault. Hope this helps :)!

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Death, Destruction, Loss of home

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Estimate the smallest possible period of a satellite in a circular orbit around earth. (mass and radius of earth is 5.98 x 1024
myrzilka [38]
Given: Mass of earth Me = 5.98 x 10²⁴ Kg

           Radius of earth r = 6.37 x 10⁶ m

            G = 6.67 x 10⁻¹¹ N.m²/Kg²

Required: Smallest possible period T = ?

Formula: F = ma;  F = GMeMsat/r²     Centripetal acceleration ac = V²/r

               but V = 2πr/T

equate T from all equation.

F = ma

GMeMsat/r² = Msat4π²/rT²    

GMe = 4π²r³/T²

T² = 4π²r³/GMe  

T² = 39.48(6.37 x 10⁶ m)³/6.67 x 10⁻¹¹ N.m²/Kg²)(5.98 x 10²⁴ Kg)

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3 0
3 years ago
In the simple act of lighting a match, chemical energy stored in the match is transformed into heat and light. What is true abou
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When a match stick is struck, some of the chemical energy is transformed into heat and light and the rest is converted into matter.   A match stick has a lot of chemical energy stored in it. When its struck, It start burning. The chemical energy stored in it is transformed into heat energy and light energy. The rest of it turn into ashes and reaction gases.


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A solenoid of length 0.700 m having a circular cross-section of radius 5.00 cm stores 6.00 µJ of energy when a 0.400-A current r
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Answer:

N/l = 104

Explanation:

Energy stored in the inductor is given by the formula

U = \frac{1}{2}Li^2

now we have

6\times 10^{-6} = \frac{1}{2}L(0.400)^2

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