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lozanna [386]
4 years ago
11

Describe the direction of the electric force between two opposite charges, between two like charges, and when a charge is in an

electric field.
Physics
1 answer:
weqwewe [10]4 years ago
8 0

Answer:

A metal sphere is neutral because it has an equal number of protons and electrons. Draw how the charges in the sphere are redistributed when a negatively charged rod is brought near it.

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An object has a coefficient of kinetic friction of 0.2 and a normal force of 30N. Find the force of kinetic friction.
shutvik [7]

Answer:

Force of kinetic friction, Fk = 6N

Explanation:

Given the following data;

Coefficient of kinetic friction, μ = 0.2

Normal force, Fn=30N

To find the Force of kinetic friction;

Mathematically, the force of kinetic friction is given by the formula;

Fk = μFn

Where;

  • Fk represents the force of kinetic friction.
  • μ represents the coefficient of friction.
  • Fn represents the normal force.

Substituting into the equation, we have;

Fk = 0.2*30

Fk = 6N

Therefore, the force of kinetic friction is 6N.

6 0
4 years ago
Facts about Tsunami?
Zepler [3.9K]
1.A tsunami is a series of ocean waves caused by an underwater earthquake, landslide, or volcanic eruption. More rarely, a tsunami can be generated by a giant meteor impact with the ocean. These waves can reach heights of over 100 ft.
2.About 80% of tsunamis happen within the Pacific Ocean’s “Ring of Fire.”
3.The first wave of a tsunami is usually not the strongest, successive waves get bigger and stronger.
4.Tsunamis can travel at speeds of about 500 miles or 805 kilometers an hour, almost as fast as a jet plane.
5.The states in the U.S. at greatest risk for tsunamis are Hawaii, Alaska, Washington, Oregon, and California.
Hope it help!
4 0
4 years ago
How we will solve this question?<br> 36.45cL=______=μL
QveST [7]

Answer:

0.364

I believe... Good luck!

8 0
3 years ago
Two concentric circular loops of radii b and 2b, made of the same type of wire, lie in the plane of the page, as shown below. Th
sweet-ann [11.9K]

Answer:

a. R2b = R/4

Explanation:

The total resistance of a metallic wire is given by the following formula:

R = ρL/A

where,

R = Resistance of Wire

ρ = Resistivity of the material of wire

L = Length of Wire

A = Area of Wire = πr²

Therefore,

R = ρL/πr²

for the 1st wire,

radius = r = b

Therefore,

R = ρL/πb²   ----------- equation 1

Now, for the second wire,

r = 2b

Therefore,

R2b = ρL/π(2b)²

R2b = ρL/πb²4

using equation 1:

R2b = R/4

therefore, correct option is:

<u>a. R2b = R/4</u>

8 0
3 years ago
A mother finds her daughter’s mug of hot cocoa on a table an hour after she had been drinking it. As the mother pours out the co
FromTheMoon [43]

Answer:

The cocoa was mixed with hot water, but some cocoa settled as it cooled because the solubility went down.

7 0
3 years ago
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