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erastovalidia [21]
2 years ago
11

Susan gently pushes the tip of her finger against the eraser on her pencil and the pencil does not move. Which of the

Physics
1 answer:
pochemuha2 years ago
6 0

Answer: D. ➡️⬅️

Explanation: I just knew the answer ;)

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The height of the Empire State Building is 318.00 meters. If a stone is dropped from the top of the building, what is the stone'
Helen [10]
We can use 3rd equation of motion to find the velocity of the stone just before it strikes the ground.

Height = S = 318 meters
Acceleration = a= 9.8 m/s²
Initial velocity = u = 0
Final velocity = v = ?

According to the 3rd equation of motion:

2aS = v² - u²

2(9.8)(318)=v²

v²=6232.8

⇒

v = 78.95 m/s

So, the velocity rounded of to nearest integer will be 79 meters per second.

Thus, C option is the correct answer
5 0
3 years ago
Action and Reaction are equal in magnitude and opposite in direction.Then,Why do they not balance each other?​
Ivan

Answer:

Newton's third law of motion states that every action has an equal and opposite reaction. This indicates that forces always act in pairs. Reaction forces are equal and opposite, but they are not balanced forces because they act on different objects so they don't cancel each other out.

4 0
2 years ago
(Please explain why) A bar magnet is dipolar. This means is has ____ poles.
earnstyle [38]
Di = two, just like 'bi'. --take di-zygotic twins, or di-atomic + di-sulphide, etc.
5 0
3 years ago
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Matthew is looking at two different atoms. One has 8 protons and 10 neutrons. The other substance has 8 protons and 12 neutrons.
Lunna [17]

Answer:

They are the same element.

Explanation:

Atom >>>>> Proton >>>> Neutron

A >>>>>>>> 8 >>>>>>>>> 10

B >>>>>>>> 8 >>>>>>>>> 12

From the table above we can see that both atoms have the same proton number.

Therefore, they are the same element because they have the same proton number which means that they have the same atomic number. The element in this case is existing as an isotope in that the atoms have the same proton number but different neutron number.

6 0
3 years ago
Is the following true or false?
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True, recycling allows products to be reused which saves alot the natural resources that are used.
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3 years ago
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