What is the binding energy of helium atom if its mass is 4.002603 u?

Aray of light traveling parallel to the principal axis of a concave mirror will be reflected through the mirror's

How are series and parallel circuits simililar? both have multiple paths for electrons to travel. both require resistors in their circuits. both require a switch to complete the circuit. both have at least one path for electrons to travel.

Which stable element is used to determine the age of volcanic rock? a- argon b- carbon-14 c- potassium d- carbon-12