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    				| 1. | 79. If G is the universal gravitational constant, Mis the mass, R is the radius and h is the altitudeGMthen R+hhas the dimensions of1) Velocity3) Force2) Potential energy4) Acceleration | 
| Answer» velocity V=√2GM/R =(2GM/R)^1/2 By putting the dimensional formulas of G,M,R,and V We get , V =(M^-1 L^3 T^-2)(M^1 L^0 T^0)(M^0 L^1 T^0)^1/2 =(M^0 L^2 T ^-2)^1/2 =(M^0 L^1 T^-1)=L.H.S And we know thatV=( M^0 L^1 T^-1) R.H.S So R.H.S =L.H.S | |