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The pilot of an aircraft wishes to fly due west in a 50.0 km/h wind blowing toward the south. The speed of the aircraft in the absence of a wind is 205 km/h. a) In what direction should the aircraft head? b) What should its speed be relative to the ground?
A railroad train is traveling at 30 m/s. The locomotive whistle emits a loud tone at frequency 440 Hz. what is the frequency of the sound heard by a stationary listener in front of the locomotive
Estimate the pressure exerted on a floor by the following one pointed chair leg (56 kg on all four legs) of area = 0.06 cm2 N/m2
A boulder has a volume of 1 m3 and a mass of 5000 kg. what will be the effective mass of the boulder
A 61.0 kg skier encounters a dip in the snow's surface that has a circular cross section with a radius of curvature of 12.0 m .If the skier's speed at point A is 7.50 m/s (before entering dip), what is the normal force exerted by the snow on the skie..
Two charges, q1 = -80 nC and q2 = +50 nC are placed 3 m apart as shown. The (x,y) coordinates of the charges and two other points in meters are indicated. Find out the electric potential at points A and B
Consider a region of space with volume 80 mm3. Suppose the energy stored in the electric field of that particular region of space is 35 J. What is the average electric field strength in this region?
A hand-cranked AC generator is used to cause 0.65 A of current (rms), What is the minimum average rate at which work must be done on the generator
For a particular RLC series circuit, the capacitive reactance is 2.55 ?, the inductive reactance is 45.5 ?, What is the maximum voltage across the circuit
A 54.5-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.646 and 0.321, respectively. What horizontal pushing force is required to just start the crate moving
your optometrist recommends that you purchase reading glasses with a refractive powerof 3 diopters. determine the location of your near point or far point
A diatomic gas does 320 J of work and also absorbs 600 cal of heat. What is the change in internal energy of the gas?
A satellite in a circular orbit around the earth with a radius 1.019 times the mean radius of the earth is hit by an incoming meteorite. Calculate the amount of that work converted to heat
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