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An airplane has an effective wing surfacearea of 10 m2 that is generating the lift force. Inlevel flight the air speed over the top of the wings is 176 m/s,while the air speed beneath the wings is 158 m/s. What is the weight of the plane in Newtons?
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A model rocket fired vertically from the ground ascends with a vertical acceleration of 4.0 m/s2 for 5.8 s, What is the maximum altitude reached
A typical adult ear has a surface area of 1.56 Ã- 10-3 m2. The sound intensity during a normal conversation is about 3.94 Ã- 10-6 W/m2 at the listener's ear. How much power is intercepted by the ear
you are driving north on 107th avenue at a speed of 29.2 mph. a police car whose siren produces a sound at a frequency
A 1100kg automobile travels at 80km/h. What net work would be required to bring it to a stop
The width of the contact of each wire with your skin is 1.10 cm and the thickness of the conducting layer of your skin is 0.023 mm, calculate the resistivity of your skin
A circular disk has surface charge density 8.0nC/cm^2. What will the surface charge density be if the radius of the disk is doubled? Express your answer to two significant figures and include the appropriate units.
A wheel (radius 0.6 m) is rolling on a horizontal surface with a center of mass acceleration of 0.7 m/s2. If the force applied to the center of the wheel is 27.036 N and the wheel has a mass of 10.409 kg, what is the friction force acting between the..
Capacitors won't hold a charge indefinitely; as time goes on, charge gradually migrates from the positive to the negative plate. We can model this as a discharge of the capacitor through an internal "leakage resistance." What is the leakage resist..
a spare pressure vessel flange bolt is discovered inside the reactor shroud during a refueling outage of a nuclear
A diver springs upward from a diving board. At the instant she contacts the water, her speed is 8.90 m/s, and her body is extended at 75.0 degrees with respect to the horizontal surface of the water. Determine her initial velocity
As measured in Earth's frame of reference, two planets are 485,000 km apart. How fast is the ship traveling
A certain satellite travels in an approximately circular orbit of radius 9.1 × 106 m with a period of 8 h 39 min. Calculate the mass of its planet from this information
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