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olchik [2.2K]
3 years ago
8

13. How many electrons does a complete third electron shell hold?

Physics
1 answer:
ale4655 [162]3 years ago
6 0

Answer:

  • A) 8

<u>A complete third electron shell holds </u><u>8</u><u> electrons</u>

<u>---------------------------</u>

<u>hope it helps...</u>

<u>have a great day!!</u>

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A car is going through a dip in the road whose curvature approximates a circle of radius 200 m. At what velocity will the occupa
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Answer:

Explanation:

The solution along with the diagram can be found in the attachment. Feel free to raise doubts.

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Which is a characteristic of centripetal acceleration?
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It is directed inward, toward the center of a circle.

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A car accelerates uniformly in a straight line with acceleration 10m/s 2 and travels 150m in a time interval of 5s. How far will
spayn [35]

Explanation:

Given:

Acceleration of car = 10 m/s

Distance travelled in 5 sec = 150 m

To find:

Distance travelled in the next 5 seconds

Concept:

There are 2 ways to app this kind of questions .

Either , we can find the total distance travelled in 10 seconds and then subtract 150 m from it.

Whereas , you can find out the final velocity at the end of the 5th seconds. Using equation of motion, then get the distance travelled in next 5 seconds.

Calculation:

v² = u² + 2as

=> ( u + at)² = u² + 2as

=> u² + 2uat + a²t² = u² + 2as

=> 2uat + (at)² = 2as

=> 2u (10)(5) + (10 × 5)² = 2 (10)(150)

=> 100u = 3000 - 2500

=> 100u = 500

=> u = 5 m/s

Distance travelled in 10 seconds :

s = ut + ½at²

=> s = (5 × 10) + ½(10)(10)²

=> s = 50 + 500

=> s = 550 m

Distance travelled in the 2nd half will be :

d = 550 - 150

=> d = 400 m

So final answer is :

6 0
3 years ago
Differentiate between moments and momentum​
marshall27 [118]

Answer: Momentum applies to objects in motion and is the product of mass and velocity. It is not the energy, but the variables are the same. By contrast, "moment" is an expression of the "rotational force" caused by a force acting at some distance from a fulcrum.

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A child rides a bicycle from rest, reaching a velocity of 3.8 m/s [E] after 4.7 s. What is the acceleration of the bicycle?
Maurinko [17]

Answer:

0.81 m/s^2

Explanation:

A child rides a bicycle from rest

The child reaches a velocity of 3.8m/s

The time is 4.7 secs

Therefore the acceleration can be calculated as follows

v= u + at

3.8= 0 + a(4.7)

3.8= 0 + 4.7a

3.8-0= 4.7a

3.8= 4.7a

a= 3.8/4.7

= 0.81 m/s^2

Hence the acceleration is 0.81 m/s^2

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