Why do scientists believe the universe is still expanding?
1 answer:
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This is the answer to what a hypothesis may also be called
Answer:C
Explanation:
Partially submerged block along with vessel is accelerated upwards .
Initially the block weight is supported by buoyant force such that it is in equilibrium.
when the system start accelerating upwards then the effective gravity will be
g+a where a is the acceleration of the system.
so only net gravity is increased so block will not ascend or descend.
Mathematically
where density of liquid
V=volume of object inside the water