Answer:
7.75%
Explanation:
mass of climber, m = 55 kg
height, h = 701 m
Qc = 4.5 x 10^6 J (heat exhaused by the body)
Work = m x g x h
W = 55 x 9.8 x 701
W = 377839 J
W = QH - Qc
Where, QH is the heat input
QH = 377839 + 4.5 x 10^6
QH = 4877839 J
So, the efficiency
e = W / QH
e = 377839 / 4877839
e = 0.0774 = 7.75 %
Thus, the efficiency of the body is 7.75 %.
The atomic number of the atom is 13. This means that its electronic configuration is (2 8 3) or in other words:
1<span>s2, </span>2<span>s2, </span>2<span>p6, </span>3<span>s2, </span>3<span>p<span>1
If three electrons are lost, then these electrons are removed from the outermost level.
In our case, electrons are removed from the third energy level (one electron is removed from the 3p orbital and two electrons are removed from the 3s orbital).</span></span>
Answer:
Friction between two objects causes a transfer of electrons from one object to the other.
Explanation:
There would be a symbol on names of the elements that would say which state it would usually be in.
there are more metals in the periodic table of elements (currently) if that's what the second question is asking about
