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A skier weighing .80kN come down a frictionless ski run that is circular (R=30 m) at the bottom, as shown. If her speed is 12m/s at point A, what is her speed at the bottom of the hill (point B). Angle from point A to B is 40 degrees.
A man slides along a long water slide and then being launched into the air to land in a water pool. Find the magnitude of the velocity at landing
Oxygen diffuses from the surface of insects to the interior through tiny tubes called tracheae. An average trachea is about 2 mm long, Find the concentration of oxygen in the air
A fisherman reels in 12 of line while landing a fish, using the constant forward pull of 35. How much work does the tension in the line do on fish.
Rotates a 1.00 kg discus along a circular path of radius 1.04 m. The maximum speed of the discus is 17.0 m/s. Find out the magnitude of the maximum radial acceleration of the discus.
The length of a simple pendulum is 0.65 m and the mass of the particle (the "bob") at the end of the cable is 0.26 kg. What is the angular frequency of the motion
(Rev 2/11)In a 60 Hz circuit (such as house wiring), the voltage varies from a maximum value to a minimum, and back again 60 times per second. How is the average voltage defined
An object hangs from a spring balance. The balance registers 30 N in air, 20 N when the object is immersed in water, What is the specific gravity of the unknown liquid
A single circular loop of radius 0.24m carries a current of 2.7A in a magnetic field of 0.96T . What is the maximum torque exerted on this loop? t=______N*m
A turntable that spins at a constant 73.0{\rm rpm} takes 3.00{\rm s} to reach this angular speed after it is turned on. Find its angular acceleration
Assume that the reservoir is 200m deep, held back by the dam wall . A small horizontal pipe at the base of the dam transfers water to the generator hall, where it gushes out at high speed and is used to turn the turbines that generate electricity.
A flight attendant pulls her 63N flight bag a distance of 312m along a level airport floor at a constant velocity. The force she exerts is 39N at the angle of 59° above the horizontal.
How much force must the elbow exert?What is the horizontal distance between the elbow and the point where the weight of the forearm acts?
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