What would be the position of the centre of mass? A circular uniform disk of radius R has a hole of radius r (r < R/2). The centre of the hole is R/2 from the centre of the disk. Surface density of the disk is σ. What would be the position of the centre of mass.?

Which transition by an electron will release the greatest amount of energy? oa ob oc od

This is the substance(s) formed in a chemical reaction.

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.