find the density of metallic objects which floats at the interface of Mercury of specific gravity 13.6 and water such that 40% of its volume is submerged under Mercury and 60% under water?​

d

explanation:

v=uf/(u-f)

= 5.10/(5-10) convex lens has positive focal length

=50/-5

=-10 cm (formed at other side)

which three statements are true about all alloys?

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

moisture is lackin, and organic acids are scarce.