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Air (density = 1.29kg/m^3) passes over the top and bottom surfaces of an aircraft whose effective wing area is 75.5m2. If air speeds above and beneath th the wings are 954km/h and 540km/h respectively, and if the lift force due to Bernoulli effect is all the force necessary to keep the plane in the air, what is the mass of the plane?
Two resistors A and B are 60,000 and 40,000 (omega sign) respectively and are in series across a constant power supply of 100V. What amount of current is flowing in each of the 3 resistors
Loretta travels by car from one city to another with different constant speeds between pairs of cities. Find the distance between two cities
a muon with half-life 1.52 micro secondsin its own frame travels 60 km. what is that distance in the frame of the muon
An ?-particle has a charge of +2e and a mass of 6.64 × 10-27 kg. It is accelerated from rest through a potential difference that has a value of 1.75 × 106 V, what are the radius of its circular path
A helicopter is flying in a straight line over a level field at a constant speed of 5.4 m/s, How would you calculate the angle the velocity vector makes with the ground at the instant before impact
A 300-g block is dropped onto a vertical spring with spring constant k =180.0 N/m. find the speed of the block just before it hits the spring
A container is filled to the brim with 1.6 L of mercury at 20°C. As the temperature of the container and mercury is increased to 49°C, compute the linear expansion coefficient of the material
Three parallel wire 5 m long carry each 24 A of current in the same direction. Find the magnitude force on each wire
A spacecraft approaching the earth launches an exploration vehicle. What is the speed of the exploration vehicle relative to the spaceship
A hunter on a frozen, essentially frictionless pond uses a rifle that shoots 4.20g bullets at 960m/s. Find the recoil velocity of the hunter if he fires the rifle horizontally
A radio station broadcasts at a rate of 89.3 million cyces each second. what is the period of this wave and if the wavelength is 3.359 meters, what is the speed of this radio wave
A uniform block of height 0.330 m, floats in glycerin of density 1260 kg/m3. The bottom of the block is 0.2748 m below the surface of the glycerin. Illustrate what is the density of the block?
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