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vaieri [72.5K]
3 years ago
12

A student grabs a piece of paper and tears it from the middle. Which statement best explains the forces involved?

Physics
2 answers:
PolarNik [594]3 years ago
3 0

Answer:

b. The normal force between the molecules of the paper is overcome by the contact force of the hands.

Explanation:

The paper molecules are held together by a weak bond. When the student holds the paper on both sides with the center of the paper in between, the student applies two equal forces in the opposite direction of the paper making the paper molecules weaken and separate.

stich3 [128]3 years ago
3 0

Answer:

The electrostatic forces from the contact of the hands with the paper causes the paper molecules to separate.

Here's the rest of the answers

1.) Which statement is correct about the strength of forces?

Electrostatic forces are trillions of times stronger than gravitational forces.

2.) A student tries to push a book across a table. Which forces acting on the book are a result of electrostatic forces?

normal force and friction

3.) What type of force can explain how a gecko climbs up a wall?

contact forces

5.) A heavy hammer is sitting on top of a board. Which statement correctly describes why the hammer does not go through the board?

The electrostatic forces between the molecules of the board prevent the force of gravity from breaking the board apart.

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A baseball bat hits a baseball with a force of 100 newtons. What is the force and its direction exerted by the ball on the bat?
Brut [27]

Answer:

The force exerted by the ball on the bat has a magnitude of 100 N and its direction is exactly opposite to that of the force exerted by the bat on the ball.

Explanation:

Recall that Newton's third law tells us that : "For every action, there is an equal and opposite reaction."

Therefore if the bat acts on the ball with a force of 100 N, the ball acts on the bat with a similar magnitude of force (100 N) but direction opposite to the original force.

F_{ab} = -\,F_{ba}

7 0
3 years ago
Why the bicycle stops when the cyclist stops pedaling?
mr_godi [17]

Answer:

The bicycle slows down because of the frictional force acting on the tyres of the bicycle. When this frictional force overcomes the force applied by paddling, the bicycle stops.

3 0
3 years ago
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Find the resultant force of the following forces :
bezimeni [28]

The resultant of the given forces is; 6√2 N

<h3>How to find the resultant of forces</h3>

We are given the forces as;

10 N along the x-axis which is +10 N in the x-direction

6 N along the y-axis which is +6N in the y-direction

4 N along the negative x-axis which is -4N

Thus;

Resultant force in the x-direction is; 10 - 4 = 6N

Resultant force in the y-direction is; 6N

Thus;

Total resultant force = √(6² + 6²)

Total resultant force = 6√2 N

Read more about finding resultant of a force at; brainly.com/question/14626208

4 0
2 years ago
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The International Space Station has a mass of 1.8 × 105 kg. A 70.0-kg astronaut inside the station pushes off one wall of the st
Aleonysh [2.5K]

Answer:

a = 5.83 \times 10^{-4} m/s^2

Explanation:

Since the system is in international space station

so here we can say that net force on the system is zero here

so Force by the astronaut on the space station = Force due to space station on boy

so here we know that

mass of boy = 70 kg

acceleration of boy = 1.50 m/s^2

now we know that

F = ma

F = 70(1.50) = 105 N

now for the space station will be same as above force

F = ma

105 = 1.8 \times 10^5 (a)

a = \frac{105}{1.8 \times 10^5}

a = 5.83 \times 10^{-4} m/s^2

3 0
3 years ago
Indicate whether the statement is true or false. an astronaut weighs the same on earth as in space.
tino4ka555 [31]
Weight is different (but mass is the same)
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2 years ago
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