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pogonyaev
3 years ago
11

3. A cart at rest at the top of a roller coaster has 1000 J of

Physics
2 answers:
vovikov84 [41]3 years ago
5 0

Answer:

600J

Explanation:

Assuming no energy is lost and perfect transfers.

On the top of the first hill, E_{k}+E_{p}=1000 - however there is no Kinetic Energy so - E_k = 0

On the second hill, the total amount of energy is still the same (1000) - this time we have a smaller amount of potential energy. We can rearrange to get E_k=1000-400

wariber [46]3 years ago
4 0

Answer:

j

Explanation:

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Anton [14]

Answer:

The order of increasing energy is as follows

"microwave < infrared < visible < ultraviolet"

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Explanation:

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Arrange the following spectral regions in order of increasing energy: infrared, microwave, ultraviolet, visible.

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Where h = planck constant, f = frequency of light.

From above formula we can conclude that higher frequency means higher energy.

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san4es73 [151]

Answer:

a.

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cuz whenever the ball was traveling up the staircase it was building up energy to use (potential energy) unlike b.

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