Final answer:
The net magnetization can be flipped from longitudinal to transverse by a radio frequency pulse if the RF Pulse and Gyromagnetic Ratio share the exact energy value, which is a resonance condition specific to each type of nucleus.
Step-by-step explanation:
A radio frequency pulse can only flip the net magnetization from the longitudinal to the transverse if the RF Pulse and Gyromagnetic Ratio share the exact energy value. In the context of nuclear magnetic resonance (NMR), this is a quantum mechanical process where a radio frequency pulse at a specific frequency induces transitions between different energy states of nuclei in a magnetic field. This frequency is dependent on characteristics such as the type of nucleus, chemical environment, and strength of the external magnetic field, and is therefore a unique resonance condition for each nuclear species.