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hndalama
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Homework Statement
The Earth is about 12.70 km in diameter. The Earth’s average density is about 5.5 grams cubic centimeter. A nucleon (the main constituent of an atomic nucleus) has a mass of about 1.67 x 10⁻²⁷ kilograms. If the Earth’s mass is entirely due to its nucleons, how many nucleons are in the Earth?
Homework Equations
Volume = 4/3pi*r3
The Attempt at a Solution
radius =6350m
volume = 4/3pi*(6350)3 = 1.07 *1012
density =5.5g/cm3 =5500kg/m3
Earth's mass = density*volume
=5500kg/m3 * 1.07 *1012
=5.899 *1015 kg
number of nucleons= 5.899 *1015 kg / 1.67 x 10⁻²⁷
= 3.53 * 1042
This answer is wrong but why is it wrong?
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