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Answer:
Length of whale in km = 0.028578 km
Explanation:
Given:
Length of whale = 28,578 millimeter
Find:
Length of whale in km
Computation:
We know that;
1 km = 1,000,000 mm
So,
Length of whale in km = 28,578 / 1,000,000
Length of whale in km = 0.028578 km
Answer:
Neutrons
Explanation:
Isotopes are variations of an element that differ from the number of neutrons.
The core of the atom contains a nucleus. That nucleus is made up of protons and neutrons.
Protons are made up two up quarks and a down quark. Up quarks have a charge of +2/3 and down quarks have a charge of -1/3.
+2/3 + 2/3 -1/3 = +4/3 - 1/3 = +3/3 = +1. This means that protons have a positive charge.
Neutrons are made up of two down quarks and an up quark.
-1/3 - 1/3 + 2/3 = -2/3 + 2/3 = 0. This means that neutrons have no charge, or a neutral charge.
Answer is: spectra.
Atomic spectra is series of colored lines which occures when atoms emit light of certain wavelengths. E<span>lement produces a particular set of spectral lines.
</span>Electrons exist in shells and each shell has a specific energy. E<span>lectrons absorb photons and jump to higher energy levels.</span>