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4 years ago

Electrons can move from place to place. When they do move, which way do they go?

Physics

2 answers:

Nat2105 [25]4 years ago

5 0

A. they attract to the opposite charged atom

irinina [24]4 years ago

4 0

Electrons move from a negatively charged area to a positively charged area, as they are attracted to positive objects.

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A rope applies a horizontal force of 200 N to pull a crate a distance of 4 m across the floor. A frictional force of 90 N oppose

Svetach [21]

Answer:

A. 800 J

B. - 360 J

C. 440 J

Explanation:

Applied force, F = 200 N

Friction force, f = 90 N

Distance, d = 4 m

Work done = Force x distance x cos θ

where, θ be the angle between the force and distance.

A. W = Applied force x distance = 200 x 4 x cos0 = 800 J

B. W = frictional force x distance = 90 x 4 x cos 180 = - 360 J

C. Total work done = 800 - 360 = 440 J

6 0

3 years ago

PLEASE HELP!!!

d1i1m1o1n [39]

Answer: 95.7 N

Explanation: The tension on the chandelier is equal to the its weight.

Weight is the force directed downwards and tension is the force exerted of the opposite side.

T = W of the chain + W of the chandelier

= m1( g) + m2 (g)

= 0.37 kg ( 9.8 m/s2) + 9.4 kg (9.8 m/s2)

= - 95.7 N it means the force is directed downwards

since tension is equal weight

T = 95.7 N

6 0

3 years ago

Phil is riding a scooter and pushes off the ground with his foot. this causes him to accelerate at 12 m /s. Phil weighs 600 N. h

Dvinal [7]

Answer:

734.16 kg m/ $s^{2}$

Explanation:

The problem is asking for the Force of pushing off the ground.

The formula of Force is: F = mass x acceleration

Given = Mass: 600 newtons (N)

Acceleration: 12 m/ $s^{2}$

We have to convert the mass into kg first. Remember that 1 kg is equal to 9.80665 newtons.

Let x be the mass in newtons.

Let's convert: $\frac{1 kg}{9.80665 N}$ x $\frac{x}{600 N}$ = $\frac{600}{9.80665}$ = 61.18 kg

Phil's weight is 61.18 kg

Let's go back to finding the force.

F = m x a

F = 61.18 kg x 12 m/ $s^{2}$

F = 734.16 kg m/ $s^{2}$

7 0

3 years ago

Because of friction, rotational kinetic energy is not conserved while the disks' surfaces slip over each other. What is the fina

ikadub [295]

Answer:

See attached picture.

Explanation:

See attached picture for explanation.

4 0

3 years ago

when an element tends to lose its valence electrons in chemical reactions , does it behave more like a metal or nonmetal

Juli2301 [7.4K]

It behaves more like a metal

Explanation:

When an element tends to lose its valence electrons in chemical reactions, they behave more like a metal.

Metals are electropositive.

Electropositivity or metallicity is the a measure of the tendency of atoms of an element to lose electrons.

This is closely related to ionization energy and the electronegativity of the element.

The lower the ionization energy of an element, the more electropositive or metallic the element is .

Metals are usually large size and prefers to be in reactions where they can easily lose their valence electrons.

When most metals lose their valence electrons, they attain stability.

Non-metals are electronegative. They prefer to gain electrons.

learn more:

Reactivity brainly.com/question/6496202

#learnwithBrainly

4 0

4 years ago