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devlian [24]
2 years ago
11

In a roller coaster, a car has X joules of potential energy when it is resting at the top of the hill. The car moves downhill an

d reaches the bottom of the hill, where it moves quickly. Assuming no friction, what does the law of conservation of energy predict about the car?
A)At the bottom, the car has X joules of potential energy.
B)At the bottom, the car has X joules of mechanical energy.
C)At the bottom, the car has more than X joules of kinetic energy.
D)At the bottom, the car has more than X joules of mechanical energy.
Physics
1 answer:
natita [175]2 years ago
4 0
"At the bottom, the car has X joules of mechanical energy" is the one among the following choices given in the question that <span>the law of conservation of energy predict about the car. The correct option among all the options that are given in the question is the second option or option "B". I hope the answer helped you.</span>
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Calculate the de Broglie wavelength of a 0.56 kg ball moving with a constant velocity of 26 m/s (about 60 mi/h)
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The de Broglie wavelength of a 0.56 kg ball moving with a constant velocity of 26 m/s is 4.55×10⁻³⁵ m.

<h3>De Broglie wavelength:</h3>

The wavelength that is incorporated with the moving object and it has the relation with the momentum of that object and mass of that object. It is inversely proportional to the momentum of that moving object.

λ=h/p

Where, λ is the de Broglie wavelength, h is the Plank constant, p is the momentum of the moving object.

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The de Broglie wavelength associated with the object weight 0.56 kg moving with the velocity of 26 m/s is λ=4.55×10⁻³⁵ m.

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