Some ppl say Thor is as strong as superman some say he is not but wht I wonder.is how strong is Thor physicaly without his hammer and what powers dose he have without his hammer
Mjolnir doesn't amp his physical strength. His belt does that. It doubles his natural strength.
As for what he can do without Mjolnir: He can naturally control the weather and create continent splitting earthquakes. Mjolnir just lets him do that easier and with greater control.
Mjolnir allows him to fly, teleport between realms, and a myriad of other abilities that are as varied as Silver Age Superman's powerset.