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Anettt [7]
3 years ago
8

What is a substance that cannot be broken down into other substances by chemical reactions?

Biology
1 answer:
vovikov84 [41]3 years ago
3 0
Element 
An element is a pure substance that cannot be broken down into other substances, an element is made up of only one type of atom. 
Hope this helps :) 
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How high is the ceiling in a school gym if a volleyball thrown upward from the floor at 15 m/s barely touches the ceiling before
Harman [31]

The height of the ceiling in the school gym from the floor is 11.48m.

HOW TO CALCULATE HEIGHT OF A PROJECTILE:

  • Using one of the equations of motion as follows:

v² = u² + 2as

Where;

v = final velocity (m/s)

u = initial velocity (m/s)

a = gravitational acceleration (m/s²)

s = distance traveled (m)

According to this question,

  • The final velocity (v) of the volleyball is 15m/s
  • The initial velocity is 0m/s
  • The acceleration due to gravity is 9.8m/s

Using the formula, v² = u² + 2as, the height of the ceiling (s) can be calculated as follows:

15² = 0² + 2 (9.8) (s)

225 = 0 + 19.6s

225 = 19.6s

s = 225/19.6

s = 11.48m

Therefore, the height of the ceiling in the school gym from the floor is 11.48m

Learn more: brainly.com/question/21065813

5 0
3 years ago
Read 2 more answers
All cells come from cells it’s a 7 letter word what is it?
asambeis [7]

decided 19 × 1080 add that to 2097 + flip

5 0
1 year ago
Suffering the impact of swarms of locusts, a farmer uses an airplane to spray an insecticide over 1,500 acres of his corn field.
Crazy boy [7]

Answer:

C. a chemical treatment.

Explanation:

In this case we would be talking about a chemical treatment, since the application of an artificial compound is made, and it is not clarified that it was "ecofriendly".

On the other hand, the question clarifies that the farmer is suffering from the plague. This indicates that he is not preventing it (Integrated pest management), he is treating it.

Finally, it should not be considered as an agronomic treatment, since no real modifications are being made to the way the field is managed.

8 0
3 years ago
WILL MARK BRAINLIEST FOR BEST ANSWER which is the best example of parasitism
Kitty [74]
The answer is C
Parasitism is the relationship between two animals, one is benefiting and the other is harmed. In this example, the tapeworm is benefiting by eating all the pig’s food, but the pig is harmed.
I hope this helped!!
8 0
3 years ago
HELP ASAP
ololo11 [35]

Answer: step 1 is radiation step 2 is conduction

Explanation: step 1 is radiation because the sun is giving off heat radiation which is heating up the sand without the sun actually touching it


step 2 is conduction because your foot is actually touching the sand and the sand it hotter than your foot, so the sand transfers its heat to your foot until your foot is as hot as the sand

3 0
3 years ago
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