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A jet airplane in level flight has a mass of 8.66 × 104kg and the two wings have an estimated total area of 90.0m2. (a) What is the pressure difference among the lower and upper surfaces of the wings? (b) If the speed of air under the wings is 225m/s, what is the speed of the air over the wings? Suppose air has a density of 1.29kg/m3. (c) Describe why all aircraft have a “ceiling,” a maximum operational altitude.
you are traveling on a plane. the velocity of the plane with respect to the air is 140 ms due east. the velocity of the
A 110 g cube of ice at 0°C is dropped into 1 kg of water that was originally at 90°C. What is an final temperature of the water after the ice has melted.
A 0.750 kg block is attached to a spring with spring constant 15 N/m. While the block is sitting at rest, What is the amplitude of the subsequent oscillations
A child rides a horse in a circular path on a merry-go-round. how far is the horse from the center of the merry-go-round
A toy cannon uses a spring to project a 5.28 g soft rubber ball. The spring is originally compressed by 5.06 cm and has a force constant of 8.08 N/m. At what point does the ball have maximum speed
Two balls collide in a head on, completely elastic collision. Ball #1 is .50 kg and is traveling with a speed of 4.3m/s in the positive x direction. What will the speed and direction of each ball be after the collision
A 98.0-g wooden block is initially at rest on a rough horizontal surface when a 12.6-g bullet is fired horizontally into it, determine the speed of the bullet immediately before impact
you would like to shoot an orange out of a tree with your bow and arrow. the orange is hanging 5.00 m above the ground.
A child holds a candy bar 10.0 cm in front of a convex mirror and notices that the image is only one-half the size of the candybar. What is the radius of curvature of the mirror?
A hydroelectric power plant is situated at the base of a large dam. Water flows into the intake near the bottom of the reservoir at a depth of 100.2 m, Estimate the maximum possible peak current that a single generator can supply
The bonds are dated April 1, 2000, and are issued on that date. The discount rate of interest for such bonds on April 1, 2010, is 10%. Illustrate what cash proceeds did Harding Company receive from issuance of the bonds?
A 5 cm spring is suspended with a mass of 1.8557 g attached to it which extends the spring by 3.4967 cm. What are the charges of the beads
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