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The supersonic aircraft Concorde has a length of 63.0 when sitting on the ground on a typical day when the temperature is 16.0 . The Concorde is primarily made of aluminum. In flight at twice the speed of sound, friction with the air warms the Concorde's skin and causes the aircraft to lengthen by 22.0 . (The passenger cabin is on rollers, so the airplane expands around the passenger cabin.) Take the coefficient of linear expansion for aluminum to be = 2.40×10?5 . What is the temperature of the Concorde's skin in flight?
Two charges charges of -2.1 micro-coulombs and a charge of +2.1 micro-coulombs are placed on the corners of an equilateral triangle where the length of a side is 44 cm as shown in the sketch below. What is the magnitude of the total electric field..
A sphere consists of a solid wooden ball of uniform density 800 and radius 0.20 and is covered with a thin coating of lead foil with area density 20.
When yellow light from a sodium lamp shines on a certain photocell, What potential would be needed to stop the electrons if light with 4000 A is used
A down jacket has a surface area of 0.87 m2 and is filled with a 4.4 cm thick layer of down, At what rate is heat conducted through the coat
A car takes 9 s to go from v = 0 to v = 75 m/s at approximately constant acceleration. If you wish to find the distance travelled using the equation d = 1/2 at2, what value should you use for a.
Blocks A and B are connected across a frictionless pulley by a cord of negligible weight. If block B lies on a horizontal, frictionless surface and block A hangs vertically, what can be said about the acceelration of block B?
Calculate the period T and the tension in the string F as a function of the angle. Compute the moment of inertia of this system for an axis that passes through the combined center of mass and is perpendicular to the plane of the rings.
An electron is accelerated by a 4.5 kV potential difference. How strong a magnetic field must be experienced by the electron if its path is a circle of radius 5 cm.
An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. A 500-g sample of silver at an initial temperature of 85°C is placed in the water. Calculate the mass of the aluminum cup
A force of 5.25 newtons acts on an object of unknown mass at a distance of 6.9..*.10^8 meters from the center of Earth. how far should the object be from the center of Earth
A 0.401 kg bead can slide on a curved wire, If the wire is frictionless and the bead is released with an initial speed of 12.8 m/s in the forward direction then find the speed of the bead at B
Find out the effective coefficient of kinetic friction
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