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dem82 [27]
3 years ago
10

Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional

questions. Online Content: Site 1 Online Content: Site 2 How is coal formed and why is it considered a nonrenewable resource? (Site 1)
Physics
2 answers:
Sloan [31]3 years ago
5 0

Answer: Coal is fossil fuel extracted from earth and since it takes a long time to replenish, it is called a non renewable source of energy

Explanation: just did it

san4es73 [151]3 years ago
4 0

Answer:

Coal is fossil fuel extracted from earth and since it takes a long time to replenish, it is called a non renewable source of energy

Explanation:

Coal is formed from the fossil fuel that lie deep beneath the earth crust . These fossil fuels are dead remains of living organism that burried beneath the earth crust million of years ago.

Coal is non renewable because if once it gets depleted it will take a very very long time to replenish.

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The pressure of a gas contained in a cylinder with a movable piston is 490 Pa. The area of the piston is 0.8 m2. Calculate the m
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Hello! Please answer my question that I just posted I really need answers. I don’t know sorry hope u fine someone that does know
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3 years ago
Suman with a mass of 45kg climbs in 3m heigh ladder in 10 seconds. Calculate her power. Plz help me​
attashe74 [19]

Answer:

work done=fdcosø

f=mg=450N

d=+3m

ø=180

450×3×cos(180°) power=work done/

time taken

1350×-1 p=135watts

7 0
3 years ago
One speed skater starts across a frozen lake at an average speed of 8 m/s. Ten seconds later, a second speed skater starts from
Luba_88 [7]

Answer:

40 s

Explanation:

After 10 seconds, the first skater would have a 8m/s * 10s = 80 m head start

Let t be the number of seconds after the second skater starts will the second skater overtake the first skater

The distance traveled by the first skater after t seconds is

s_1 = v_1t = 8t

Similarly the distance traveled by the 2nd skater after t seconds is

s_2 = v_2t = 10t

Since the 2nd skater catches up to the 1st one after 80 m behind, the distance traveled by the 2nd one must be 80m greater than the distance of the 1st skater

s_2 = s_1 + 80

We can substitute s_1 = 8t, s_2 = 10t

10t = 8t + 80

2t = 80

t = 80 / 2 = 40 s

7 0
3 years ago
PLEASE HELP! I'LL GIVE BRAINLEST​
erma4kov [3.2K]

Answer:

8.162

Explanation:

W=mg

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5 0
3 years ago
Recall the topography of the Sierra Nevada Mountains east of California's central valley. Which of the following locations would
marysya [2.9K]

Answer:

3. western slope

Explanation:

If we investigate the physical features (such as natural and artificial features) of the Sierra Nevada Mountains located at the California's central valley eastern part, the western slope has the highest value of the precipitation level yearly. This is due to the location of the slope and the relevant conditions such as temperature and humidity.

7 0
3 years ago
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