Answer:
Explanation:
Given
Wall is in area
requires 1 gallon of paint
so using unitary method
gallon of paint
wall will require
gallons of paint
3 3
1 answer:
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Answer:
19.642 cm
Explanation:
f₁ = Focal length of first lens = 11 cm
f₂ = Focal length of second lens = -25 cm
Combined focal length formula
Combined focal length is 19.642 cm
In simpler terms, a proton and neutron weigh 1 amu (atomic mass unit) each.
The nucleus has 15 protons and 18 neutrons. Since a proton's and a neutron's weight is only 1 amu, we can simply add the number of protons and neutrons to find the total mass of the nucleus:
The nucleus' mass is 33 amu.