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jonny [76]
3 years ago
14

When it goes through a chemical change, a substance changes what

Physics
1 answer:
Anestetic [448]3 years ago
8 0

Answer:

form

I'm pretty sure...

let me know if I'm right, if I am give brainliest

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Which transformation of energy occurs when a fan is turned on and the blades start to rotate?
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kinetic energy

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A wind turbine transforms the mechanical energy of wind into electrical energy. A turbine takes the kinetic energy of a moving fluid, air in this case, and converts it to a rotary motion. As wind moves past the blades of a wind turbine, it moves or rotates the blades. These blades turn a generator

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10. Inertia causes your books on the car seat to continue moving forward even after you brake. TrueFalse 11. Tires with little o
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10. True

11. True

12. True

13. False

14. False

Hope this helps!!

3 0
3 years ago
When 525 J of heat is added to 7.6 g of metal at 26°C, the temperature increases to 80°C. What is the specific heat of the metal
Temka [501]

Ans the answer is 0.25J

Explanation

i guess

4 0
3 years ago
Find the average energy E for (a) An n-state system, in which a given state can have energy 0,,2,...,n . (b) A harmonic oscillat
kicyunya [14]

Answer:

a♦1  E_average = n E₀ / 2 , b) E_average= infinity

Explanation:

The energy values ​​form an arithmetic series, whose sum is

          S = n (a₁ + aₙ) / 2 = n (2a₁ + (n-1) r)/ 2

Where n is the number of terms, a₁ is the first term, aₙ the last term and r is the difference between two consecutive numbers in the series

          r = 2E₀ - 0 = 2E₀

Therefore the sum is

       S = n (0 + n E₀) / 2

      S = n² E₀ / 2

     

The average value is

         E_average = S / n

         E_average = n E₀ / 2

b) the case of harmonic oscillation

We have two possibilities.

- if we take a finite number and terms gives the same previous value

- If we take an infinite number of fears the series gives infinity and the average is also infinite

          E_average= infinity

4 0
3 years ago
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