Physics Test 23...

A nucleus with Z = 92 emits the following in a sequence; α, α, β⁻, β⁻, α, α, α, α, β⁻, β⁻, α, β⁺, β⁺, α. The Z of the resulting nucleus is

During the propagation of electromagnetic waves in a medium:

An electric-dipole is placed at an angle of 30 º to a non-uniform electric field. The dipole will experience