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nordsb [41]
3 years ago
10

3. How many valence electrons are in the outermost energy level of each of the following elements?

Physics
1 answer:
Karo-lina-s [1.5K]3 years ago
8 0
A.helium has no valency 
B.lithium has 1
C.nitrogen has either 5 or 3 because it bonds outer orbital
D.magnesium has 2
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A golf ball is at rest on the grass when a golfer walks up and applies 10 N of force to it. There is 2 N of friction, resulting
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Answer:

The forth one

Explanation:

8N of net force is applied to the golf ball

7 0
3 years ago
If a shuttle is orbiting a planet at a distance of 40 miles from the center of the planet, and is traveling at a rate of 500 mil
lawyer [7]

Answer:

Time taken, t = 30.15 minutes

Explanation:

It is given that,

Distance from the center of planet, r = 40 miles

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Let t is the time taken by it to complete  one full orbit. The displacement of the shuttle is,

d=2\pi r

d=2\pi \times 40

d = 251.32 miles

Now time can be calculated using the expression for the velocity as :

v=\dfrac{d}{t}

t=\dfrac{d}{v}

t=\dfrac{251.32\ miles}{500\ miles\ per\ hour}

t = 0.50264 hours

or

t = 30.15 minutes

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7 0
3 years ago
Can someone explain to me #4.
nalin [4]
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Explanation:

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5 0
3 years ago
Question 4
mixas84 [53]

Answer:

it's answer is 5 kg

<h2><em>hope </em><em>it </em><em>helps </em><em>you </em></h2>
6 0
3 years ago
Read 2 more answers
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