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1. A rectangular wing with an aspect ratio of 6 is to generate 1000 lb of lift when it flies at a speed of 200 ft/s. Determine the length of the wing if its lift coefficient is 1.0.
2. A 1.2-lb kite with an area of 6 ft2 flies in a 20-ft/s wind such that the weightless string makes an angle of 55° relative to the horizontal. If the pull on the string is 1.5 lb, determine the lift and drag coefficients based on the kite area.
Two free charges(+)q and (+)4q are separated by a distance l meters. find the magnitude,sign and location of a third charge which makes the system in equilibrium
two point charges lie on the x-axis. a charge of 9.4 microc is at the origin and a charge of -4.4 microc is at x 10.0
A river narrows at a rapids from a width of 15m to a width of only 6.0m. The depth of the river before the rapids is 2.7m ; the depth in the rapids is 0.70m. Find the speed of water flowing in the rapids
The current in a 44 ohm resistor is 0.10 Amp. This resistor is in series with a 28 ohm resistor, and the series combination is connected across a battery. Determine what is the battery voltage
A battery having an emf of 12.00 V delivers 100 mA when connected to a 73.0 load. Determine the internal resistance of the battery
How far does the car go before it stops. A car traveling at 50m/s runs out of gas while traveling up a 30 degree slope. how long will it travel before it rolls back down.
Find the mans rate of sweat production
Three people pull simultaneously on a stubborn donkey. Jack pulls eastward with a force of 64.7 N, Find the magnitude of the net force the people exert on the donkey
a wave moves on a string with wavelength lambda and frequency f. a second wave on the same string has wavelength
a car sits in an entrance ramp to a freeway waiting for a break in the traffic. the driver sees a small gap between a
The lab experiment is repeated with the same two glass plates but with a different human hair. Calculate the diameter of the hair
A railroad car of mass 2.3 x 104 kilogram moving at 4.00 m/s collides and couples with two coupled railroad cars, Estimate the speed of the three coupled cars after the collision
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