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The wing of an airplane has an average cross-sectional area of 11 m2 and experiences a lift force of 91,000 N. What is the average difference in the air pressure (in N/m^2) between the top and bottom of the wing?
a 10kg sign hangs from two wires. one wire makes an angle of 45 degrees and the other makes a 30 degree angle. what is
A motorcycle daredevil plans to ride up a 2.50m high 25.0° ramp, sail across a 10-m-wide pool filled with hungry crocodiles, and land at ground level on the other side.
a uniformhorizontal string has a mass of 0.030 kg and a length of 6.00 m. this string is attached toa wall at one end.
When the plutonium bomb was tested in New Mexico in 1945, approximately 1 gram of matter was converted into energy. Suppose another bomb is tested, and 9.8 grams of matter are converted into energy. How many joules of energy are released by the explo..
The glass core of an optical fiber has an index of refraction of 1.60. The index of refraction of the cladding surrounding the fiber is 1.48. Obtain the maximum angle a light ray can make
the electric field strength is 2.00times104 inside a parallel-plate capacitor with a 0.500 spacing. an electron is
A disk with a moment of inertia of 75+1.5 kgm2 rotates at a speed of of 156+5 radians/sec
A 1650-kg car is traveling at 34 m/s. How fast must a 91 kg bicycle and rider be traveling to have the same kinetic energy as the car.
A satellite is in an elliptical orbit at altitudes ranging from 230 to 890 km At the high point its moving at 7.23 km/s. Howfast is it moving at the low point and find the radius of acircular orbit in which the total orbital energy of the satelliteis..
A person looking out the window of a stationary train notices that raindrops are falling vertically down at a speed of 5.54 m/s relative to the ground. How fast is the train moving
Initially there are 6*10 power 9 radioactive of element w (decay constant 0.173/day) in a sample. As a nucleus of w decays, it converts 2.67*10 power -28 kg of its mass to energy and releases the energy. How much time (in days) is needed for the samp..
Estimate the time constant in a RC circuit.
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