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The pilot of an aircraft wishes to fly due west in a 50 kilometer per hour wind blowing toward the south. The speed of the aircraft in the absence of a wind is 200 km/h. Obtain in what direction should the aircraft head? Find what is the sped with respect to the land?
two tiny metal spheres a and b of mass ma 4.40 g and mb 5.90 g have equal positive charge q 2.50 microc. the spheres
Find the change in entropy in the universe. Now, two identical ideal oxygen gases with the same pressure P=1 atm and the same number of particles N = 10^22, but di erent temperature T1 = 30 C and T2 = 40 C,
What is the tension in the connecting string if all surfaces are frictionless and the mass of the pulley is negligible?
What is the period of a simple pendulum with mass of 5 kg displaced 4o with a string length of 0.45 m near the Earth's surface
a 15 ohm toaster a 12 ohm clothes iron and a 320 ohm lamp are turned on simultaneously in parallel on a typical 110 v
q1. in a science fiction story a microscopic black hole is given an enormous positive charge by firing an
a 0.02 kg lead bullet traveling 200 m/s strikes an armor plate and comes to a stop. If all of its energy is converted to heat that it absorbs, what is the temperature change
The de Broglie wavelength is lambda = h/p, but the momentum of a relativistic particle is not mv. what is the electron's de Broglie wavelength
A steel beam has a length of 10 m and a cross-sectional area of 1 cm2. what is the Young's modulus of steel
a current of 1mA pass through a copper wire for 60s. how many coulombs of charge pass any point in the wire during this time period? how many proton pass any point in the wire during this time period
an unstable particle called the pion has a mean lifetime of 25 ns in its own rest frame. a beam of pions travels
You have a small electromagnet that consumes 300 W from a residential circuit delivering 120 V at 60.0 Hz. What is the internal resistance of the electromagnet
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