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kirill115 [55]
3 years ago
6

What is the potential energy of a rollercoaster if it weighs 1565 kg and sits on a 115 m tall ride?

Chemistry
1 answer:
AnnyKZ [126]3 years ago
7 0

Answer:

Explanation:

Potential energy builds as the coaster is going up the loop-the-loop and converts to kinetic energy on the way down and out of the loop-the-loop. The potential energy of the coaster is at its lowest and the kinetic energy is at its highest as the coaster moves in the lowest point of the loop-the- loop.

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Answer:

See explanation

Explanation:

Substitution implies that one thing is repalced by the other.

Substitution of one ion by another largely depends on the sizes of the ions in question.

The ionic radius of Mn3+ is about 0.65 Angstroms while that of In3+ is about 0.94 Angstroms. On the other hand, the ionic radius of Y3+ is about 1.032 Angstroms.

It is clear that the sizes of Mn3+ and In3+ are closer to each other hence Mn3+ can substitute for In3+ easily than Y3+ in a lattice site.

The larger size of Y3+ explains why it is not easily replaced by Mn3+.

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