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spin [16.1K]
2 years ago
15

In which example would the most transfer of energy take place from Mechanical energy to Thermal (heat) energy?

Physics
1 answer:
drek231 [11]2 years ago
5 0

Answer:The answer is when a metal plate is pressed against a fast spinning piece of steel hard enough to stop it. i know this because I just took a test and got this question and got it write

Explanation:

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By how much will the length of a chicago concrete walkway that is 18 m long contract when the equipment drops from 24 degrees ce
xenn [34]

Answer:

Contraction of Chicago concrete walkway = 8.64 x 10⁻³ m

Explanation:

Thermal expansion or compression is given by ΔL = LαΔT

Here Length of Chicago concrete walkway, L = 18 m

         Change in temperature, ΔT = (-16 - 24) = -40 °C

         Coefficient of thermal expansion for concrete, α = 12 x 10⁻⁶ °C⁻¹

Substituting

    ΔL = LαΔT = 18 x 12 x 10⁻⁶ x (-40) = -8.64 x 10⁻³ m

Contraction of Chicago concrete walkway = 8.64 x 10⁻³ m

4 0
3 years ago
A group of students must conduct an experiment to determine how the location of an applied force on a classroom door affects the
Rainbow [258]

Answer:

yes

Explanation:

yea

3 0
3 years ago
Variation in neutrons of an atom will change the identity of the element.<br> True<br> False
ElenaW [278]

Answer:

Remember that the number of protons in the nucleus determines an element's identity. Chemical changes do not affect the nucleus, so chemical changes cannot change one type of atom into another. The number of protons in a nucleus does change sometimes, however. The identity of the atom, therefore, it is true

4 0
3 years ago
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Calculate the amount, in grams, of an original 300 gram sample of potassium 40 remaining after 3.9 billion years.
Schach [20]
71718 88.
1919910
So just if
3 0
2 years ago
calculate the magnitude of impulse applied to a 0.75 kilogram cart to change its velocity from 0.50 meters per second east to 2.
ella [17]

Answer:

1.125 N s towards  East

Explanation:

since both velocities are in same direction  hence change in velocity is

Δ V = final - initial

       = 2.00 - 0.50

       = 1.50 towards East

impulse = change of linear momentum

             = mass ×  change in velocity

            =  0.75 ×1.50

          =  1.125 N s towards  East

8 0
3 years ago
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