How do many coal-powered factories change the environment?

Physics

2 answers:

Brums [2.3K]4 years ago

8 0

Answer:

By causing acid rain

Explanation:

FinnZ [79.3K]4 years ago

6 0

Answer:

By causing rain

Explanation:

Coal powered factories release chemicals into the air that create acid rain.

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A biker starts from rest and reaches a speed of 10 m/s after t travelling with

Natali [406]

Answer:

2m/s^2

Explanation:

we can use this formula to get the answer:

(vf - vi) / t = a

Since vf= 10m/s, vi=0m/s, and t=5

We can just substitute the values into the formula to get the result

that is:

(10 - 0) / 5 = 2m/s^2

6 0

3 years ago

Read 2 more answers

A helicopter descends from a height of 600 m with uniform negative acceleration, reaching the ground at rest in 5.00 minutes. de

uranmaximum [27]

Given:
h = 600 m, the height of descent
t = 5 min = 5*60 = 300 s, the time of descent.

Let a = the acceleration of descent., m/s².
Let u = initial velocity of descent, m/s.
Let t = time of descent, s.
The final velocity is v = 0 m/s because the helicopter comes to rest on the ground.
Note that u, v, and a are measured as positive upward.

Then
u + at = v
(u m/s) + (a m/s²)*(t s) = 0
u = - at
u = - 300a (1)

Also,
u*t + (1/2)at² = -h
(um/s)*(t s) + (1/2)(a m/s²)*(t s)² = 600
ut + (1/2)at² = 600 (2)
From (1), obtain
-300a +(1/2)(a)(90000) = -600
44700a = -600
a = - 1.3423 x 10⁻² m/s²

From (1), obtain
u = - 300*(-1.3423 x 10⁻²) = 4.03 m/s

Answer:
The acceleration is 0.0134 m/s² downward.
The initial velocity is 4.0 m/s upward.

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3 years ago

Which of the following lists the typical steps of the scientific method in the

irinina [24]

B. Ask a question - Hypothesize - Experiment - Analyze - Draw a conclusion

Explanation:

The scientific method is a systematic approach in which investigations are conducted in science.

It follows systematic manner;