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An airplane is flying with a velocity of 246 m/s at an angle of 30.0° with the horizontal, as the drawing shows. When the altitude of the plane is 2.7 km, a flare is released from the plane. The flare hits the target on the ground. What is the angle ??
An AC power generator produces 54 A (rms) at 3600 V. The voltage is stepped up to 100000 V by an ideal transformer, What percentage of the power delivered by the generator is dissipated as heat in the power line
A 1.4-m-diameter vat of liquid is 2.2m deep. The pressure at the bottom of the vat is 1.3atm. What is the mass of the liquid in the vat
If 1,000 gallons per minute (gpm) of water are flowing through a 4-inch (inside diameter) pipe, what is the average velocity of the water in the pipe
A dampled harmonic oscillator is made from a 0.8kg mass on a k=14N/m spring with a damping constant of 400g/s, What is the energy of the oscillator after one oscillation
A ball is thrown toward a cliff of height h with a speed of 31m/s and an angle of 60 degrees above horizontal. What was the maximum height of the ball
A thin rod of length 0.84 m and mass 190 g is suspended freely from one end. find how far above that position the center of mass rises
q1. 0.55 kg block of ice is sliding through you on the very slippery floor at 3.6 ms. as it goes by you give it a kick
A toroid of mean radius 27 cm and circular cross section of radius 1.7 cm is wound with a superconducting wire of length 1000 m that carries a current of 350 A. What is the magnetic field at the mean radius
Starting from rest, a basketball rolls from the top to the bottom of a hill, reaching a translational speed of 5.2 m/s. Ignore frictional losses. What is the translational speed of the frozen juice can when it reaches the bottom
Electrons accelerated by a potential difference of 12.86 V pass through a gas of hydrogen atoms at room temperature. Calculate the wavelength of light emitted with the longest possible wavelength
Suppose that the sound level of a conversation is initially at an angry 70 dB and then drops to a soothing 50 dB. determine the final sound wave amplitudes
A 5.50 g bullet moving at 688 m/s strikes a 860 g wooden block at rest on a frictionless surface. What is the resulting speed of the block
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