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pochemuha
3 years ago
6

Helppp meee sciiiiiiiiiii

Physics
2 answers:
Molodets [167]3 years ago
3 0
I think it's (26.coal)(25.wind.) I hope it's right.
Pepsi [2]3 years ago
3 0
-I'm guessing that #26 is (1) because when you use/ burn coal you can't reuse it because its chemical and not a physical change.... you just can't recycle coal, makes no sense to me if it is recycled......

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A moon with a mass of 6.0 x 10 kg orbits about a planet with a mass of 5.0x 10^24 kg. They are 4.0 x 10^8 meters apart What is t
allochka39001 [22]

The gravitational force between them is <em>1.25 x 10^20 Newtons.</em>

(I think you must have typed the mass of the moon wrong.  

It must be 6.0 x 10^22 kg.)

4 0
4 years ago
Odessa here are Question
Mashutka [201]
On page number 2 for the question number 7 is answered by Oceanic-continental convergent plate boundaries expect that 1 plate is continental. Since oceanic crust has density of 3g/cc and continental crust has a density of only 2.7g/cc whenever oceanic crust collides with continental crust the oceanic crust subducts 
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3 years ago
Describe how water may be treated before it is used by people?
slamgirl [31]
It can be purified or be used by a filter
5 0
4 years ago
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A car starts from rest and accelerates along a straight line path in one minute. It finally attains a velocity of 40 meters/seco
igomit [66]
It is very important to note down all the details that are given in the question. Based on these details the answer can be derived.
Initial velocity of the car (V1) = 0 meters/second
Final velocity of the car (V2) = 40 meters/second
Initial time (T1) = 0 Second
Final time (T2) = 60 seconds (In this case we have converted 1 minute into 60 seconds for the ease of calculation.
Then
Average acceleration = (V2 - V1)/ (T2 - T1) m/s^2
                                   = (40 - 0)/(60 - 0) m/s^2
                                   = 40/60 m/s^2
                                   = 2/3 m/s^2
                                   = 0.67 m/s^2
So the average acceleration of the car is 0.67 meters/second square.
7 0
4 years ago
when an apple falls towards the earth the earth moves up to meet the apple. Is it true? If yes, why is the earth motion not noti
Archy [21]

Answer:

Yes, this is true.

-- While the apple is falling, the same gravitational force acts on both the apple and the Earth.

-- The mass of the apple is somewhere in the neighborhood of 1/4 kg.

-- The mass of the Earth is about 5.972 x 10²⁴ kg.

-- Since the Earth has roughly 2.389 x 10²⁶ times as much mass as the apple has, the apple has roughly 2.389 x 10²⁶ greater acceleration than the Earth has, and moves roughly 2.389 x 10²⁶ times as far down as the Earth moves up, before they smack together.

-- That's why you don't notice the Earth's motion.

-- Also, you're standing on the Earth, moving up with it, toward the apple.  Maybe it would be different if you were sitting on the apple, riding it down to the ground, and you were able to notice the motion of the ground coming up to meet you at a speed that's 0.00000000000000000000000000419 of YOUR speed.  

Answer From Gauth Math

5 0
3 years ago
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