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alina1380 [7]
2 years ago
5

which would take more force to move over ice:a sled with a rough metal bottom or a sled with a smooth metal bottom? why?

Biology
1 answer:
Sergeeva-Olga [200]2 years ago
7 0
The sled with a rough metal bottom would take more force to move over ice, because the rough surface would increase friction and the force needed.
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Explanation:

The difference between Meristematic Tissue and Permanent Tissue are:

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An apple on a tree living or non living? .​
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D. Nitrogen-14 has 7 electrons, 7 protons, 7 neutrons nitrogen-15 has 7 electrons, 7 protons, and 8 neutrons

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In an atom, number of electrons is equal to the number of protons.  And the number of neutrons is equal to the difference between the mass number of the atom and the atomic number. For Nitrogen 14, electron is 7, proton is also 7 as number  of electrons and number of protons are equal. So, the neutron will be 14-7= 7. For Nitrogen 15, electron number is 7 so proton number will be also 7. Neutron number for nitrogen 15 will be 15-7= 8. That's why the answer is option number 4.

8 0
2 years ago
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6 0
3 years ago
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