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A 15000-kg helicopter is lowering a 4800-kg truck by a cable of fixed length. The truck, helicopter, and cable are descending at 16.0 m/s and must be slowed to 5.00 m/s in the next 53.0 m of descent to prevent damaging the truck. Assume a constant rate of slowing.
(a) Determine the tension in the cable.
kN
(b) Determine the lift force of the helicopter blades.
The average lifetime of a pi meson in its own frame of reference (i.e., the proper lifetime) is 2.6 10-8 s. What distance would it travel if time dilation did not occur
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