The physics related to the measurement of the hard probes at RHIC are surveyed through the processes of Drell-Yan pair production, direct &ggr; production, heavy quark production, the inclusive production cross section of the hadrons resulting from the mini-jets, and the identified jets over the varying beam energy and the colliding nuclei. Some of the uncertainties in those measurements can be decided from thep+pprogram. By performing a simple calculation, a few physics possibilities in the coming run are investigated with estimated uncertainties. ©2001 American Institute of Physics.