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matrenka [14]
4 years ago
12

In the United States, most of our energy comes from this non–renewable resource, which has a negative effect on the environment.

Physics
1 answer:
Eduardwww [97]4 years ago
8 0
All of them have a negative effect on the environment. 
But your answer would be Natural Gas being the leading source of energy in the US by 31% overall. 
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Three divers stand on a platform ready to dive, one weighs 400 Newtons, the second weighs 475 Newtons, and the third weighs 500
myrzilka [38]

Answer:

GPE is directly proportional to mass as

U=mgh

hence more mass more gpe

ans is one with 500N

7 0
2 years ago
Read 2 more answers
The visible spectrum of the electromagnetic spectrum is made up of which of the following?
svetlana [45]
The visible spectrum of the electromagnetic spectrum is made up of "<span>red, orange, yellow, green, blue, and violet light"

In short, Your Answer would be Option C

Hope this helps!</span>
5 0
3 years ago
A charge of 0.20uC is 30cm from a point charge of 3.0uC in vacuum. what work is required to bring the 0.2uC charge 18cm closer t
vlada-n [284]

Answer:

The correct answer is "4.49\times 10^{10} \ joules".

Explanation:

According to the question,

The work will be:

⇒ Work=-\frac{kQq}{R}

              =-\frac{1}{4 \pi \varepsilon \times (18-30)\times 3\times 0.2}

              =-\frac{1}{4 \pi \varepsilon \times (-12)\times 3\times 0.2}

              =\frac{0.3978}{\varepsilon }

              =4.49\times 10^{10} \ joules

Thus the above is the correct answer.    

3 0
3 years ago
What would the products of a double-replacement reaction between Na2S
MAVERICK [17]

Answer:

A. NaF and MgS

Explanation:

The reaction equation is given as:

             Na₂S  +  MgF₂  →   2NaF  + MgS

The product of this reaction is  NaF and MgS.

In a double displacement reaction there is an actual exchange of partners to form new compounds. This reaction takes place between ionic compounds.

The driving force for the reaction is:

  • formation of an insoluble precipitate
  • formation of water or any other non-ionizing compound
  • liberation of a gaseous product.
8 0
3 years ago
we know if we apply the force along the left, friction acts along the right and vice versa.But what about an object which is not
myrzilka [38]

Answer:

<em>Explanation below</em>

Explanation:

<u>Friction Force</u>

When two objects are in contact, the surface between them exerts a frictional force as long as the objects are tried to move with respect to each other.

If a given external force is applied to the left, then a friction force appears to the right and opposes the intent to move them. A similar situation occurs when the force is applied to the right side.

If the object is at rest and no force is applied, no friction force appears.

It's important to recall that two different friction forces are defined: the kinetic friction force and the static friction force, usually the latter is greater than the first.

5 0
3 years ago
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