A Small Dust Particle of Mass 7

question 27

Short Answer

A small dust particle of mass 7.90 × 10^-6 g is being observed under a magnifying lens. Its position is determined to within 0.0050 mm. (1 y = 3.156 × 10⁷ s, = 1.055 × 10^-34 J ∙ s)
(a) Find the minimum uncertainty in its velocity implied by the uncertainty in its position.
(b) Assuming the dust particle is moving at the speed you just found, how many years would it take for the particle to move 1.0 mm?

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Definitions:

Revenue Recognition

The accounting standard that identifies the exact circumstances where revenue is considered or documented.

Percentage of Completion

Percentage of completion is an accounting method used to recognize revenue and expenses of long-term projects proportionally to the work completed.

Realizable Revenue

The amount of revenue that is considered to be collectible from goods sold or services rendered.

Revenue Recognition

The accounting principle that income should be reported in the accounting period when it is earned, regardless of when the cash is received.