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A jet aicraft is traveling at 22m/s in horizontal flight.The engine takes in air at a rate of 72.0 kg/s and burns fuel at a rate of 2.70 kg/s. The exhaust gases are ejected at 615 m/s relative to the aircraft. Find the thrust of the jet engine and the delivered power.
In a hydraulic lift, the maximum gauge pressure is 18.5 atm. what is the heaviest vehicle that can be lifted
A cube of copper with each edge having the dimension 12.7 mm, is put in a vise and squeezed by a force of 215 N exerted by either side of the vise. What is the stress in the copper cube
Sam pushes a 10.0-kg sack of bread flour on a frictionless horizontal surface with a constant horizontal force of 4.0 N starting from rest. What is the speed of the sack after Sam has pushed it a distance of 20 cm
The period of the simple harmonis oscillator is 2.00 s. When the given clock reads time t= 0.206s, the velocity of the oscillator is -.314 m/s. find the position of the oscillator when t= 5.00s.
q1. a motorist travelling with constant velocity of 15 ms about 34 mph passes a school crossing corner where the speed
An atom has only two levels, a ground state with energy -25.0 eV, What wavelength photon is required for stimulated emission of an electron in the excited state
in a typical Van de Graaff linear accelerator, protons are accelerated through a potential difference of 20 MV. What is their kinetic energy if they started from rest
An electric vehicle starts from rest and accelerates at a rate of 1.6 m/s2 in a straight line until it reaches a speed of 20 m/s. The vehicle after that slows at a constant rate of 1.4 m/s2 until it stops. (1) How much time elapses from start to s..
Two blocks are in contact on a frictionless table. A horizontal force F is applied to m1. If m1 = 1.66 kg, m2 = 3.72 kg, and F = 6.25 N, find the magnitude of the force between the two blocks
what is the speed of a 200g baseball with a de Broglie wavelength of .18nm, what is the de Broglie wavelength of a 200g baseball with a speed of 20 m/s
A metal wire of mass m=24.1 mg can slide with negligible friction on two horizontal parallel rails separated by distance d= 2.56 cm. what is the speed and direction of the wire
A ball is thrown directly downward with an initial speed of 7.80 m/s from a height of 29.4 m. After what time interval does it strike the ground
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