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Test-tubes containing liquid samples are spun at a very high speed in a centrifu

ID: 2040178 • Letter: T

Question

Test-tubes containing liquid samples are spun at a very high speed in a centrifuge.
Which of the following is true?

Select one:

a. The rate of sedimentation will be proportional to the magnitude of the acceleration experienced by the liquid in the test-tubes.

b. Sedimentation occurs more rapidly than in a normal lab frame since particles in the liquid experience a very high gravitational field acting toward the centrifuge's axis.

c. The net force on the liquid has components down (due to gravity) and horizontally outward (due to centrifugal force).

d. The surface of the liquid in the test-tube will be at about 45 degrees to the horizontal.

e. The net force on the liquid is approximately tangential to the circular path followed by the liquid.

Explanation / Answer

answers

a) false its according to the size,shape and density

b) False centrifugal force is not gravity

c) False it's radial one

d) this is also false

e) net is not significantly different from horizontal

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