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An airplane wing is designed so that the speed of the air across the top of the wing is 299 m/s when the speed of the air below the wing is 189 m/s. The density of the air is 1.29 kg/m3. What is the lifting force on a wing of area 21.0 m2?
A pump discharges water at a rate 100kg/s with a guage pressure of 2atms. the flow is transported by a 10 cm diameter pipe up to an elevation of 5m
A Styrofoam box has a surface area of 0.87 m2 and a wall thickness of 2.0 cm. determine the thermal conductivity of the Styrofoam
What is the normal force that the incline exerts on the block. find the acceleration of the block.
Suppose the superhero had flown 145 m at a 125° angle with respect to the positive x-axis
The difference in piezometric pressure, pz,A – pz,B. Express both answers in kPa and pressure differences pA - pB.
A spinning wheel is slowed down by a brake, giving it a constant angular acceleration of 5.20 rad/s^2. What is the angular speed of the wheel at the end of the 2.80-s interval
The Hubble Telescope orbits the earth in a near circular orbit of about 585 km above the Earth's surface. find the magnitude of the centripetal acceleration of the satellite
Compute what resolving power is needed to measure with a spectrograph the natural line width of the alpha particles from Po-212
Illustrate what would be the relative strengths and weaknesses of this study? What ethical considerations must be taken into account while undertaking this study?
At a constant speed of 55 km/h , an automobile travels 600m along a straight highway that is inclined 5.0 degrees to the horizontal. What is the cars vertical velocity magnitude
What speed must she have at point 3, so that the normal force at the top has the same magnitude as it did at the bottom.
A hot air balloon decends toward the ground with a velocity of (1.6 m/s). A champagne bottle is opened to celebrate takeoff, expelling the cork horizontally with a velocity of (4.0 m/s) relative to the balloon.
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