jordonlewis
29.06.2019 •
Physics
An object’s buoyant force and weight aren’t equal, but they aren’t the same force. true or false?
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Ответ:
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 buoyant force there for the answer is true
Ответ:
True
Explanation:
When an object is immersed in a liquid, it experiences an upward force which is called buoyant force. Buoyant force depends on the volume immersed, density of liquid and gravity.
The formula of buoyant force is given by
Buoyant force = Volume of immersed part of the body x density of liquid x gravity
According to Archimedes principle,
Weight of body in liquid = Weight of body in air - Buoyant force
Ответ:
Explanation:
Distance to Andromeda galaxy
Speed of light is
Time is given by
Hence, the light from Andromeda left
ago