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eduard
3 years ago
8

Calculate the kinetic energy of a 150 g baseball moving at a speed of 40. m/s (89 mph).

Chemistry
1 answer:
LUCKY_DIMON [66]3 years ago
6 0
Kinetic Energy= 0.5 times velocity squared times mass
So KE= 0.5times 150 times 40 squared

(Use a calculator)
And don't forget units
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Answer:

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Explanation:

Lithium is in the first column of the periodic table, so it will have 1 valence electron.

Bromine is in the seventh column of the periodic table, so it will have seven valence electrons.

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When combining elements to form compounds, the "crisscross method" is used. Above Li would be a charge of +1, and above Br would be a charge of -1.

Cross the 1 from the top of Li to the bottom of Br, and so there is 1 Br.

Cross the 1 from the top of Br to the bottom of Li, and so there is 1 Li.

It is not written BrLi because chemists decided to order them the other way. Technically speaking, it isn't wrong, but the positive charge is normally put on the left and the negative charge is normally put on the right.

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3 years ago
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Answer:

Either B or C. Composition or the Distance from the Earth.

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3 years ago
Hydrazine, N2H4, may react with oxygen to form nitrogen gas and water.
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Answer:

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Answer:

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