An atom with 4 protons, 5 neutrons, and 4 electrons has an atomic mass of _____ amu. (Enter a whole number.)
1 answer:
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Answer:
The correct option is C
Explanation:
From the question we are told that
The distance between axles of the car is
The position of the car's center of mass is
Now we can evaluate the distance of the center of mass to the rear axle as follows
substituting values
assuming the car is at equilibrium, taking moment about the center of mass
=>
=>
substituting values
Note [
is the front axle weight and
is the rear axle weight ]