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During a 100 m sprint, Usain Bolt reaches his maximum speed in 2 seconds from rest with constant acceleration. He then maintains this maximum speed until he reaches the 90 m mark, when he peeks back and sees that the other sprinters in the race are all left in his wake. He then decides to start showboating again by reducing his speed at a constant rate, as he did in the 2008 Olympics, until he crosses the finish line at a speed of 9 m/s. If Usain Bolt finishes his race in 9.6 seconds, determine his maximum speed during the race.
the length of the mercury column at the ice point and steam point are 5.0 cm and 40.0cm respectively. when the
two flat surfaces are exposed to a uniform horizontal magnetic field of magnitude 0.42 t. when viewed edge-on the first
a mass of 1 kg attached to a spring with a spring constant of 112 nm oscillates horizontally on a smooth frictionless
determine the critical crack length for an internal crack in a thick 2024-t6 alloy plate that has a racture toughness
a chemical reaction takes place in a spherical pressure vessel. the rate of heat release per unit volume from the
a small town has a peak power requirement of 150 kw. a plant is created using the regenerative cycle. the energy can be
helium at 810 r 45 ibfin2 and a velovity of 10 fts enters an insulated nozzle operating at steady state and exits at
a power plant is connected to a supply of 150 psia steam at 500 degrees f. the load is constant and requires throttling
a compressed air cylinder initially contains air at 25ordmc and 100 kpa. the volume of the cylinder is 0.01021 m3. the
a load of 500 pounds is placed on a cylinder of 1040 carbon steel with a 2 inch radius. calculate the stress in
find the sum of two harmonic motions of equal amplitude but of slightly different frequencies. discuss the beating
What should the diameter of the nozzle outlet be in inches and what is the mass flow rate of steam through the nozzle in lbm/min?
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