Use the drop-down menus and what you have learned about potassium-argon dating to complete the sentences.
radioactive dating can be compared to an hourglass, with the
elements on the top
scientists compare
in the rock to determine its age.
potassium-argon dating is ideal for dating
and
rock.

Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?

How much energy is supplied to each coulomb of charge that flows through a 12-v battery?

Avector of magnitude 2 cannot be added to a vector of magnitude 3 so that the magnitude of the resultant is a. zero b. 1 c. 3 d. 5 e. 7