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An airplane wing is designed so that the speed of the air acrossthe top of the wing is 220 m/s when thespeed of the air below the wing is 205m/s. The density of the air is 1.29 kg/m3. What is the lifting force on a wing of area 30.0m2?
Zach, whose mass is 64kg , is in an elevator descending at 10m/s. What is Zach's apparent weight while the elevator is braking
A major-league catcher gloves a 93 mi/h pitch and brings it to rest in 0.14m. If the force exerted by catcher is 803 N, what is the mass of the ball.
A photon with a wavelength of 7.50e-11 m is scattered by a loosely bound electron in a metallic target and exits at an angle of 135° from its original direction. What is the wavelength of the scattered photon
A steel ball of mass .5 kg is fired vertically up from the edge of a building 20 m high with an initial speed of 10 m/s. find the average resistance force that sand exerts on the ball
A reasonable estimate of the moment of inertia of an ice skater spinning with her arms at her sides can be made by modeling most of her body as a uniform cylinder. Estimate the skater's moment of inertia to two significant figures
A beam of nuclei is used for cancer therapy. Each nucleus has an energy of 190 MeV, and the relative biological effectiveness (RBE) of this type of radiation is 16. How many nuclei are in the beam
A very long, thin straight line of charge has a constant charge density of 20 pC/cm. How far does the electron go before it comes back
A capacitor is charged by a 10 V ideal battery through a 100 Ohm resistor. It's voltage increases from 0 to 5V in 4 seconds. What is the capacitance of the capacitor
Light of 550nm is incident on two slits. A maximum is seen at an angle of 4.10 degrees and a minimum at 4.78 degrees. What is the distance between the slits
"The Compton generator is a beautiful demonstration of the Coriolis force due to the earth's rotation,.... A narrow glass tube in the shape of a torus or ring (radius R of the ring >> radius of the tube) is filled with water, plus some dust partic..
To reach a picnic basket, an ant walks from his hill located at 6.00m, 50.0 degress north of east to the basket located at 8.00m 24.0 degress south of east
What is the total translational kinetic energy in a test chamber filled with nitrogen (N2) at 2.03×105 Pa and 20.7°C? The dimensions of the chamber are 3.00 m × 6.00 m × 8.30 m
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