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Question: Consider a 1,692 kg car cruising at constant speed of 74 km/h. Now the car starts to pass another car, by accelerating to 104 km/h in 9 s. Neglect air drag and friction and assume the road is level. By taking the entire car as the system and applying an energy balance, determine the additional power (kW) needed to achieve this acceleration to 1 decimal place. (note: 1 m/s = 3.6 km/h).
Many bike computers tell the ride what altitude they are at and how the altitude is changing using a basic barometer and pressure differences. A biker rides on a hill and the computer reads barometric pressures of 475 mm Hg at the start and 530 mm Hg..
the velocity of a body is given by vt 5e-t 6 where v is in ms and t is in seconds. use the secant method to find when
If a 130 lb person stands on the plank in the location shown, what is the reaction force on each of the joists?
a dragster weighing 1600 lbf attains a speed of 270 mph in the quarter mile. immediately after passing through the
air initially at rest m1 0 with an initial pressure p1 1 atm and temperature t1 300k flows through a nozzle into a
Given the planar velocity field vr = -A sin(?t) sin θ r 2 vθ = A sin(?t) cos θ r 2 , where A and ? are known constants, 1. Determine the vorticity.
a pickup truck has a five liter four stroke cycle v6 si engine operating at 2400 rpm. the compression ratio rc10.21 the
Hazen-Williams Formula- Find the Diameter of a Pipe, The length of cast-iron pipe is to be 4200 ft., and the head causing flow is to be 12.6ft. After the pipe has been in service 5 years, it is expected to discharge water at a rate equal to 3.2 cf..
the tank shown has a 180 mm inside diameter and a 12 mm wall thickness. knowing that the tank contains compressed air
a preheater involves the use of condensing steam at 100c on the inside ofnbspa bank of tubes to heat air that enters at
the 0.78 kg bob of a pendulum is fired from rest at position a by a spring which has a stiffness of k 1.62 knm. the
the aluminum plate of thickness t 3.5 mm. is to be designed so the maximum stress remains below 100 mpa. the hole must
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