This study examines the mixed convective flow of magnetohydrodynamic (MHD) hybrid nanofluids (hnfs) \(Ag-MgO/\) Water over a stretching surface, focusing on the effects, of heat source/sink, thermal radiation, and Joule heating. This significance lies in understanding how hybrid nanofluids improve heat and mass transfer in advanced cooling technologies and energy system. The aim is to analyze the impact of magnetic fields, temperature-dependent viscosity, and slip conditions on the thermal and momentum boundary layers. The problem is solved using the spectral collocation method with Legendre wavelets (SCMLW). The results show that hybrid nanoparticles enhance the boundary layer thickness, temperature, concentration, and velocity, while an inverse relationship between the magnetic parameter and fluid density is observed. These findings contribute to enhancing the design of fluid-based systems involving MHD effects.
