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Question: An airplane weighs 60,000 N and has a wingspan of 17 m. A 1/10th-scale model is tested, flaps down, in a compressed-air tunnel at 15 atmospheres pressure and 15?C at various speeds. The maximum lift on the model is measured at the various speeds, with the results as given:
Estimate the minimum flying speed of the aircraft at sea level (i.e., the speed at which the maximum lift of the aircraft is equal to its weight).
Ther normal hydrogen atom consists of a proton nucleus and an orbital electron. What is the orbital speed of the orbiting electron
What is the value of h0? If the block were released from height 3h0 above the spring, Evaluate the maximum compression of the spring?
The turntable of a record player has an angular speed of 9.7 rad/s at the instant it is switched off. 4.0 sec later, Find through how many radians does the turntable rotate from the time it is turned off until it stops
The following charges are located inside a submarine: 15 micro Coulomb, -9 micro Coulomb, 25 micro Coulomb, and -31 micro Coulomb. obtain the net electric flux through the hull of the submarine
A 100 meter length of steel changes temperature by 30 C during the course of a day. If the coeffcient of thermal expansion of steel is 12 parts per million per C, what is the change in length of the steel
A wedge of mass m=36.1 kg is located on a plane that is inclined by an angle ?=21.3 degrees with respect to the horizontal. A force F=302.3 N in the horizontal direction pushes on the wedge. The coefficient of kinetic friction between the wedge and t..
A double convex thin glass lens has equal radii of curvature. Find the radius of curvature of each convex surface
The Hubble Space Telescope (HST) has excellent resolving power because there is no atmospheric distortion of the light. Its 2.4-m-diameter primary mirror can collect light from distant galaxies that formed early in the history of the universe. How fa..
An 8.0 kg sled is initially at rest ona horizontal road. The coefficient of kinetic friction between thesled and the road is 0.40. Find the change in the kinetic energy of the sled
Consider a glass sphere of radius 2.0 mm with an index of refraction of 1 .50. Find the image distance of this lens
An iceboat is gliding on a frozen lake with no propulsive force being applied. Does the horizontal momentum of the boat Change
A stone is launched straight up by a slingshot. Its initial speed is 19.2 m/s and the stone is 1.40 m above the ground when launched. How high above the ground does the stone rise
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