Question

Please give me a detailed explanation of the following questions

Answer 1

Explanation:

In the first image ; Option A) is correct

Db>Dball>Da

Because MoreDense liquids sink and less dense liquids float and A floats on B also; Ball floates partially on A and Sink partially On B.

In the second image ; Option D) 0 is correct because;

any object revolving In a circular or sperical orbit have 0 displacement as well as ∅= 90° and cos 90° = 0

And ; Work done = FORCE × Displacement × cos∅ = F×0×0 = 0.

Hope it helps!