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Tanya [424]
3 years ago
9

Shane observes that an upward force pushes him up when he sits on a chair. Based on his observation which statement is correct

Physics
2 answers:
Drupady [299]3 years ago
7 0

Answer:

<u>Option-(D):</u> The chair applies a contact force called normal force.

Explanation:

  • <u>Normal Force,Fn:</u>

When the person sits on the chair he experience an upward force just because there is net force or opposition to the object having some mass,m placed on a given surface area. As there will be force applied in opposite direction to that of applied by the body in the downward direction. Normal force is always found opposite in direction, but the magnitude of the normal force is not much or it is far less then force applied by the body on the given surface.

<u></u>

FrozenT [24]3 years ago
6 0

Shane observes that an upward force pushes him up when he sits on a chair. Based on his observation, he understands that the chair applies a contact force called "normal" force.

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Correct Answer

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3 years ago
A rod is given a charge of +16.7 UC, how many extra protons does It contain?
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Answer:

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3 years ago
Please tell me if this is Newton's first law, second, or third law of motion. There can be more than one of the same answer very
AfilCa [17]

Answer: Hope This Helps!

Explanation:

1: Newton’s first law of motion can explain how a magician pulls a tablecloth from underneath the dishes. A negligible horizontal force is applied during the process. As per Newton’s first law of motion, the dishes and glasses remain in their state of motion (rest); as a result, they remain undisturbed.

2: Newton's First Law of Motion is defined as "An object at rest and an object in motion will stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force."In soccer, when the soccer ball is in the soccer field and it is not moving, that means that it is at rest and there is no force acting upon it. When there is a person that is ready to play soccer and wants to kick the ball and play, then the unbalanced force would be the power from the person's foot.

3: Newtons third law can explain, as the cannonball is pushed forwards by the expanding high-pressure gases created by the exploding gunpowder, it pushes back on these gases. The gases push back on the cannon itself, causing it to roll backwards. Alternative answer: the cannon pushes forward on the cannonball. the reaction force is the cannonball pushing backwards on the cannon.

5 0
4 years ago
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uranmaximum [27]
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<u>Work done = (force) times (distance)</u>

If the force doesn't move, then the distance is zero, and the work done is zero.
5 0
3 years ago
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Answer:

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