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lidiya [134]
3 years ago
6

PLZ!!!!!HURRY WILL BE FRIEND FOREVER!!!

Physics
1 answer:
Bad White [126]3 years ago
3 0

The reason why weight of ashes resulting from the burning of wood is not equal to the weight of wood piece before it burns is explained below

<u>Explanation:</u>

  • The reason why the weight of ashes resulting from the burning of wood is not equal to the wood piece before it burns is that when wood burns it loses its mass and that's how ashes are created.
  • Wood contains carbon and hydrogen when these two combines with oxygen at high temperatures Carbon dioxide and water vapor are obtained as by product.when this mixture leaves the wood in the form of smoke only burnt ashes are leftover.
  • This is the main reason for inequality in the weight of wood and ash after burning.
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Can someone explain which of Newton’s Law is demonstrated in part 1 and which is demonstrated in part 2? (Picture)
rewona [7]

Answer:

Every action has an equal and opposite reaction. If the student doesn't push, nothing moves, is one student pushes, both move which is an example of newtons third law.

Explanation:

3 0
3 years ago
If a car driving down the road doubles its speed what happens to its kinetic energy?
ivanzaharov [21]

Answer:

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7 0
2 years ago
0/2 File Limit
slamgirl [31]

Answer:

Speed at which it will reach the ground is given as

v_f = 46.8 m/s

Total time for which it will remain in air is given as

t = 6.3 s

Explanation:

As we know that the object is projected upwards with speed

v_i = 15 m/s

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now when it will reach the ground then we have

y = v_y t + \frac{1}{2} at^2

so we have

-100 = 15 t - \frac{1}{2}(-9.81) t^2

4.905 t^2 - 15 t - 100 = 0

so we have

t = 6.3 s

Now speed of the object when it reaches the ground is given as

v_f = v_i + at

v_f = -15 + (9.81)(6.3)

v_f = 46.8 m/s

8 0
3 years ago
If a student is sitting in their chair and the leg of the chair breaks the student will __________ toward the floor because the
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5 0
3 years ago
Read 2 more answers
T = mg + ma solve for a
Gnoma [55]
You said                        T           =  mg + ma

Subtract  mg 
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Divide each side by  m :      a  =  (T-mg) / m

                                          or  a  =  T/m  -  g
5 0
4 years ago
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