The Mass of a Proton Is 1

question 84

Multiple Choice

The mass of a proton is 1.00728 amu and that of a neutron is 1.00867 amu. What is the mass defect (in amu) of a ⁵⁷Ni nucleus? (The mass of a nickel-60 nucleus is 59.9308 amu.)

• A)0.5155 amu
• B)28.76 amu
• C)-0.4932 amu
• D)0.5141 amu
• E)1.031 amu

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Definitions:

Diametral Pitches

Diametral pitches refer to the number of teeth per inch of the diameter of a gear, which determines the size of the teeth and the pitch of the gear.

Ratchet Wheel

A wheel or gear with teeth cut in a way that allows motion in one direction only, often used in mechanisms requiring incremental movement.

Pawl

A mechanical component that engages with another component to prevent motion in one direction, or to drive a mechanism intermittently.

Center

The point that is equally distant from all points on the circumference of a circle or the surface of a sphere; in geometry, it's the midpoint of any shape or object.