  The transverse energy and the charged particle multiplicity at midrapidity
are evaluated in a single-freeze-out model for different centrality bins at
RHIC at $\sqrt{s_{NN}}=130$ and 200 GeV. The predictions of the model are done
at the freeze-out parameters determined earlier from measured particle yields
and $p_{T}$ spectra. The results agree qualitatively well with the experimental
data.
