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Question: Use thin-airfoil theory to select a NACA four-digit wing section with a coef- ficient of lift at zero incidence approximately equal to unity. The maximum camber must be located at 40% chord and the thickness ratio is to be 0.10. Estimate the required maximum camber as a percentage of chord to the nearest whole number.
two long parallel wires separated by 3.50 cm carry currents in opposite directions. the current in one wire is 1.60 a
A train sounds its horn as it approaches an intersection. The horn can just be heard at a level of 52 dB by an observer 10 kilometer away. Obtain the average power generated by the horn
Calculate the electric flux through the same rectangle if it is parallel to the xy plane. Calculate the electric flux through the same rectangle if it now contains the y axis and its normal makes an angle of 60? with the x axis.
while walking between gates at an airport you notice a child running along a moving walkway. estimating that the child
An electric vehicle starts from rest and accelerates at a rate of 2.4 m/s2 in a straight line until it reaches a speed of 25 m/s. How much time elapses from start to stop
A skier of mass 70.0 kg is pulled up a slope by a motor-driven cable. A motor of what power is required to perform this task
a log is floating on swiftly moving water. a stone is dropped from rest from a 79.1-m-high bridge and lands on the log
q1. a horse races once around a circular track in a time of 118s with a speed of 17 ms. what is the radius of the
Two masses m1 and m2 sit on a horizontal, frictionless table and are connected by a light string, Find the tension in each of the two strings
Two particles collide and stick together to form a new particle.First particle has a rest energy E0 and a kinetic energy 2E0.Second particle is stationary and has a rest energy 2Eo. Find therest energy and the speed of the new particle.
At what maximum speed can a car negotiate a turn on a wet road with coefficient of static friction 0.205 without sliding out ofcontrol? The radius of the turn is 26.0 m.
Calculate the y-component of the magnetic force.
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