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matrenka [14]
3 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]3 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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What happens to the mass and to the weight of the foam rubber when it is compressed?​
Orlov [11]

Answer:

423523523523

Explanation:

52334W53WR53WRRWRW35423

4 0
2 years ago
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The work done by an external force to move a -6.70 μc charge from point a to point b is 1.20×10−3 j .
ASHA 777 [7]

Answer:

108.7 V

Explanation:

Two forces are acting on the particle:

- The external force, whose work is W=1.20 \cdot 10^{-3}J

- The force of the electric field, whose work is equal to the change in electric potential energy of the charge: W_e=q\Delta V

where

q is the charge

\Delta V is the potential difference

The variation of kinetic energy of the charge is equal to the sum of the work done by the two forces:

K_f - K_i = W + W_e = W+q\Delta V

and since the charge starts from rest, K_i = 0, so the formula becomes

K_f = W+q\Delta V

In this problem, we have

W=1.20 \cdot 10^{-3}J is the work done by the external force

q=-6.70 \mu C=-6.7\cdot 10^{-6}C is the charge

K_f = 4.72\cdot 10^{-4}J is the final kinetic energy

Solving the formula for \Delta V, we find

\Delta V=\frac{K_f-W}{q}=\frac{4.72\cdot 10^{-4}J-1.2\cdot 10^{-3} J}{-6.7\cdot 10^{-6}C}=108.7 V

4 0
3 years ago
Read 2 more answers
Two cars, initially 100 m distant apart, start moving towards each other
choli [55]

Answer: false

Explanation: because if one car is at 2 m/s and the other at 1 m/s one would be farther away from the stating point

6 0
3 years ago
What does the prefix for kilo- mean
artcher [175]
The word/prefix "kilo" means one thousad

Good luck on your assignment and enjoy your day!

~MeIsKaitlyn :) 
3 0
3 years ago
A flag is waved 3.2 m above the surface of a flat pool of water. When viewed from under the water, what is the magnification of
jek_recluse [69]

Answer:

1.33

Explanation:

For an optical instrument, the magnification ratio of the apparent diameter of the image to that of the object.

Mathematically, from the given information;

Magnification= \dfrac{n_{water}}{n_{air}}

where;

n_{water} =1.33\\ \\ n_{air} = 1.00

= \dfrac{1.33}{1.00} \\ \\=  \mathbf{1.33}

5 0
2 years ago
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