a child was playing with a egg shell by emerging it in a fresh water and then in strongly salty - Science - Gravitation

Question

a child was playing with a egg shell by emerging it in a fresh
water and then in strongly salty water
a out of two liquids in which the egg shell would sink ? why?
b explain the phenomenon of sink and float
c what do you understand by buoyancy or buoyant force ?
d name the factors on which buoyant force depends
e find out 3 more instances of this phenomenon from your daily
life

Aditi · Accepted Answer

a Egg will
sink in fresh water because density of egg is grater than density
of fresh water and also density of strongly salty water is more
than that of fresh water , so egg will float in this
Law of floating is when average density of the object placed in
any liquid is less than that of the liquid then the object will
float

It can also be said in terms of displacements:

Such as whenever a body is put in any fluid it occupies some space
and thus displaces some amount of liquid if mass of liquid
displaced is more than the weight of the body it is surely going to
float

c Buoyant force is an upward force exerted by a fluid, which
opposes the weight of an object in the fluid Objects immersed in
water observes a loss in weight due to the buoyant force

d The two factors on which buoyant force depends are-
the volume of the immersed object and
the density of the fluid in which the object is immersed

e sinking
of iron coin in water,floating of plastic on water and floating of
ship on the sea