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katovenus [111]
3 years ago
12

What happens to the energy "lost" by a machine?

Physics
2 answers:
Savatey [412]3 years ago
3 0

I would say A, although it depends on what kind of machine. If it does not recycle, then most likely C. I would be able to give more context based on what kind of machine it is.

bezimeni [28]3 years ago
3 0

The answer would be:

C: It goes into the environment

lose energy from a machine turns into heat.

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at the instant a traffic light turns green, a car that has been waiting at the intersection starts ahead with a constant acceler
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a)  time, t = 11.407 s, b) distance   x = 175.66 m,  v = c)      speed    v = 30.80 m / s

<h3>Explanation of question:</h3>

a) This is kinematics exercise,  write the equation of each vehicle car is;-

 x = x₀ + v₀ t + ½ a t²

Let's fix our the reference system at a point where the car  indicate that the car stops from rest is vo = 0.

 x₀ = v₀ = 0

<h3>we substitute</h3>

x = ½ a t²

truck  

x₂= v₀ t

v₀ = 15.4 m / s

At the point where they are,  positions are equal:-

½ a t² = vo t

t = 2 vo / a

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t = 2 15.4 / 2.

t = 11.407 s

b) the distance to reach it

x = ½ to t²

x = ½ 20 11.407²

x = 175.66 m

c)  the speed of the car is

 v = vo + a t

  vo = 0

    v = at

      v = 2.0 11.407

       v = 30.80 m / s

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7 0
1 year ago
A mass of 0.54 kg attached to a vertical spring stretches the spring 36 cm from its original equilibrium position. The accelerat
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<h2>Spring constant is 14.72 N/m</h2>

Explanation:

We have for a spring

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            F = kx

Here force is weight of mass

           F = W = mg = 0.54 x 9.81 = 5.3 N

Elongation, x  = 36 cm = 0.36 m

Substituting

           F = kx

           5.3 = k x 0.36

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3 years ago
What is chemical
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Answer:

D

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chemical energy is the energy stored in the bonds between atoms and molecules.

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Your teacher wants you to perform an experiment that will demonstrate a chemical property. Which experiment should you choose? A
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A) Measure the pH of different household chemicals

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To demonstrate a chemical property using an experiment, measuring the pH of different household chemicals will be the best way. The pH is the degree of hydrogen or hydroxyl ion concentration in a solution.

  • Chemical properties tell us about what a substance can do.
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Answer: 20N

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