Very small particles moving in viscous fluids experience a drag force proportional to
speed. Consider a particle of net weight W dropped in a fluid. The particle experiences a
drag force, FD = kV, where V is the particle speed. Determine the time required for the
particle to accelerate from rest to 95 percent of its terminal velocity Vt in terms of k, W,
and g. Express the distance required to reach 95% of its terminal speed in terms of g, K,
and W.

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Talia is manufacturing rolls of wire for hanging pictures. she needs a material that is so that it can easily be pulled into wire without breaking.

Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.