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You are flying to Chicago for a weekend away from the books. In your last physics class, you learned that the airflow over the wings of the plane creates a lift force , which acts perpendicular to the wings. When the plane is flying level, the upward lift force exactly balances the downward weight force. Since O'Hare is one of the busiest airports in the world, you are not surprised when the captain announces that the flight is in a holding pattern due to the heavy traffic. He informs the passengers that the plane will be flying in a circle of radius 7.23 mi at a speed of 317 mph and an altitude of 19900 ft. From the safety information card, you know that the total length of the wingspan of the plane is 227 ft. From this information, calculate the banking angle of the plane relative to the horizontal.
A 113 gram apple falls from a branch that is 2.5 meters above the ground. Just before the impact, what is the speed of the apple
A model-train transformer plugs into 120-V ac, What voltage is present across the tracks
A Spacecraft with a total mass of 50,000kg is flying with a speed of 90m/s with respect to a distant planet. What is the speed of the remaining spacecraft with respect to the planet after the explosion
A polar bear of mass 436 kg stands on an ice floe 58.10 cm thick. What is the minimum area of floe that will just support the bear in saltwater of density of 1030 kg/m3? The specific gravity of ice is 0.88.
High jumpers usually sustain fractures in the lower third of the fibula. The world record for the high jump is held by Javier Sotomayor (Cuba) at 2.45 m (1993). what is the stress in the fibula
To clear the net, the ball must rise at least 0.294 m. If the ball just clears the net at the apex of its trajectory, explain how fast was the ball moving when it left the racquet?
When doing a sound experiment, you recorded the sound of a single frequency sound when it was stationary. What frequency did you hear as your friend rode away from you
A 9.4 cm diameter loop of wire is initially oriented perpendicular to a 2.3 T magnetic field. determine the average induced emf in the loop
A 76 kg sprinter starts a race with an acceleration of 5.8 m/s2, What is the magnitude of the net external force on him in N
The surfaces of the lens have radii of curvature 27.1 cm (located on the object side of the lens), determine the index of refraction
A train accelerates at 1.93 m/s2 from rest to a steady speed in 72.61. It maintains that speed for 20.25 miles, What is the total distance traveled
An object moves with constant acceleration 3.55 m/s2 and over a time interval reaches a final velocity of 12.8 m/s.
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