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1. The flow rate Q of water in an open channel is assumed to depend on the height h of the water and width w and slope S of the channel, the wall roughness height e, and gravity g. Relate the flow rate to the other variables. 2. The lift FL on an airfoil is related to its velocity V, its length L, its chord length c, its angle of attack a, and the density r of the air. Viscous effects are assumed negligible. Relate the lift to the other variables.
Ashley (65 kg) and Ryan (80 kg) ride their motorcycles (100 kg) at a speed of 15 m/s in a spherical metal cage with a diameter of 10m, What is the normal force on Ryan
A charged particle has an initial velocity perpendicular to a uniform magnetic field. Now there is friction with the air, assumed to be a force. Determine the charge's subsequent motion
What is the magnification of an astronomical telescope whose objective lens has a focal length of 74 cm and whose eyepiece has a focal length of 2.9 cm
An electric car accelerates for 8.0 s by drawing energy from its300-V battery pack. During this time,1190 C of charge passes through thebattery pack. Find the minimum horsepower rating of the car.
A 14.0 V battery is connected in series by a resistor and an inductor. The series circuit has a time constant of 600 µs, and the maximum current is 303mA. What is the value of the inductance?
An astronaut is tethered by a strong cable to a spacecraft. The astronaut and her spacesuit have a total mass of 104 , while the mass of the cable is negligible. What force does the cable exert on the astronaut
a car makes a trip due north for three-fourths of the time and due south one-fourth of the time. the average northward
On planet A, the value of g is 11 m/s squared. If bluber weighs 732 N on planet A, how much would he weigh on earth
The width of the ribbon normal to a radius vector originationg at the star's center is much greater than the thickness of the ribbon in the radial direction.
A wild horse starts from rest and runs in a straight line 29° north of west. After 36 s of running in this direction, the horse has a speed of 10 m/s. What is the magnitude of the horse's average acceleration?
A mass of 0.8kg is located at the end of a very light and rigid rod 50 cm in length. What is the rotational inertia of the system
A 1.00-kg glider attached to a spring with a force constant 9.0 N/m oscillates on a frictionless, horizontal air track. Find the period of the glider's motion
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