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The velocity of an airplane is 200km/hr due west. Anorth west wind of 50km/hr is blowing (out of northwest).
What is the velocity of the aircraft relative to the ground?
A transformer on a pole near a factory steps the voltage down from 3600 V (rms) to 120 V (rms). evaluate the current in the secondary
The nucleus of platinum is a uniformly charged sphere with a chargeof 78e and a radius of 7.00 x 10^-15 What is the electric potential energy of an incident proton arriving at the nuclear surface
A flat, uniform, circular disk (R = 2.25 m, m = 84.0 kg) is initially at rest, but it is free to rotate in the horizontal plane about a vertical, Find the resulting angular velocity of the disk
A 24 GeV proton in cosmic radiation moves in Earth's magnetic field B, with a velocity v perpendicular to B, What is the radius of the proton's curved path in that region
A 61 kg skater and a 77 kg skater stand at rest on frictionless ice. They push off, and the 61 kg skater moves at 1.9 m/s in the + x-direction. What's the other's velocity? (Express your answer to two significant figures and include the appropriate u..
A barge has vertical sides and a flat bottom of 320 ft^2 area. when partially filled, the barge is immersed in fresh water to a depth of 2 ft. upon removal of the load the barge rises 16.0 in.
A "1m" mercury germicide lamp emits 50 Watt of 0.2537?m light through its quartz tube. compute the frequency of this light
A 8.6cm diameter wire coil is initially oriented so that its plane is perpendicular to a magnetic field of 0.64T pointing up. What is the average induced emf in the coil
A particle with a mass of 3.50 10-20 kg is oscillating with simple harmonic motion with a period of 3.50 10-5 s and a maximum speed of 1.50 103 m/s. Calculate the angular frequency of the particle
Calculate the angular momentum of the Earth about its own axis, due to its daily rotation. Assume that the Earth is a uniform sphere
A 1.49 kg ball is connected by means of two ideal strings to a vertical, rotating rod. The strings are tied to the rod and are taut. What is the tension in the lower string
A proton with mass 1.67×10−27 kg and charge 1.60×10−19 C accelerates from rest in a uniform electric field of strength 500 N/C. (a) What is the magnitude of the acceleration of the proton? (b) How long does it take the proton to reach a speed of 35,0..
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