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The pilot of an airplane wants to fly East in the presence of a 50 km/h wind with direction 60 degrees North of West as seen by a ground observer. The speed of the plane respect to still air is 250 km/h. Find the angle the plane must make respect to East.
Air flows through the supersonic nozzle. The inlet conditions are 7 KPa and 420 degree C. The nozzle exit diameter is adjusted such that the exiting velocity is 700m/s. Calculate the exit temperature
A wire carries a current of 0.97 A . This wire makes an angleof 64 degree with respect to the magnetic field of magnitude3.8*10-5T. What is the lenght of the wire
A proton initially at rest is accelerated by a uniform electric field. The proton moves 6.48 cm in 1.20 10-6 s. Find the voltage drop through which the proton moves
Point A is at a potential of +250 V, and pointB is at a potential of -140V. An α-particle is a helium nucleus that containstwo protons and two neutrons; the neutrons are electrically neutral.
You are driving north on 107th Avenue at a speed of 28.7 mph. At what frequency do you year the siren
An object of mass 2.00 kg is held at a position A, a vertical height of 20.0 m above the ground. Point B is 8.00 m directly below A. Neglect air resistance and use g = 10.0 m/s.
An ultralight plane and pilot have a total mass of 168 kg, what is the net force acting on the plane and pilot
A 25C capacitor is charged to a potential of 18V. (a) How much charge is stored on the capacitor? (b) The potential is then changed so that the charge becomes 5.9x10-4C. What is the change in potential?
q1. an aging coyote cannot run fast enough to catch a roadrunner. he purchases on ebay a set of jet-powered roller
The minimum distance required to stop a car moving at 38.0 mi/h is 41.0 ft. What is the minimum stopping distance for the same car moving at 68 mi/h, suppose the same rate of acceleration.
A 9.0 x 10 -2 ice cube at 0.0C is dropped into a Styrofoam cup holding 0.35 kg of water at 12C, Find the amount of ice remaining
A wheel, starting from rest, rotates with a constant angularacceleration of 2.70 rad/s2. What was the angular velocity of the wheel at thestart of the 3.00 s interval
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