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3 years ago

Select all that apply. The force that opposes the start of motion is referred to as _____.

2 answers:

8 0

The correct answers are <span>starting friction and </span>static friction

Friction slows down all forces, but starting friction slows down or stops completely the start of motion.

emmainna [20.7K]3 years ago

6 0

Answer: Option (c) is the correct answer.

Explanation:

A force helps to keep an object at rest is known as static friction. This type of friction avoids the movement of object from its initial place unless and until a larger force than the friction force is applied on the object.

Whereas sliding friction is the friction that is experienced when object is sliding. On the other hand, kinetic friction is the friction experienced when an object is moving from it initial place.

Thus, we can conclude that out of the given options the force that opposes the start of motion is referred to as static friction.

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If two twins (54 kg each) were 0.02 m apart, what is the force of gravity between them?

Lelechka [254]

Answer:

Force, $F=4.86\times 10^{-4}\ N$

Explanation:

We have,

Masses of two twins are 54 kg each

They are placed at a distance of 0.02 m

It is required to find the force of gravity between them. The formula used to find the gravitational force between masses is given by :

$F=G\dfrac{m_1m_2}{r^2}$

plugging all the known values:

$F=6.67\times 10^{-11}\times \dfrac{54^2}{(0.02)^2}\\\\F=4.86\times 10^{-4}\ N$

So, the force of gravity between them is $4.86\times 10^{-4}\ N$ .

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3 years ago

Can anybody help me?

jonny [76]

The answers have to be D and C

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3 years ago

Which crash caused a greater change in motion for the satellite explains why and how? Write at least 1 paragraph and use vocab.

chubhunter [2.5K]

Answer:

Explanation:

Crash one

im very sorry if it is wrong. I am DUMB!!

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3 years ago

Read 2 more answers

What causes resistance in an electric current? how is resistance measured

steposvetlana [31]

resistance is measured by ohms and when electrons move through a conductor they collide with ions in the material which produces resistance hope this helps

4 0

3 years ago

When a wire with an electric current i is placed in a magnetic field of strength b it experiences a magnetic force f. What is th

Vlad1618 [11]

The direction of force, when electric current and magnetic field direction given is at 90° to the plane containing current I and Magnetic field B.

<h3>What is magnetic force?</h3>

The force of attraction or repulsion experienced by a magnetic material when it enters the magnetic field.

When a wire with an electric current I is placed in a magnetic field of strength B it experiences a magnetic force F.

According to the Fleming's right hand rule, the direction can be determined by knowing any two parameter's direction.

Thus, The direction of force is at 90° to the plane containing current I and Magnetic field B.

Learn more about magnetic force.

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8 0

2 years ago