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The supersonic aircraft Concorde has a length of 63.0 m when sitting on the ground on a typical day when the temperature is 15.0 C . 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 20.0 cm . (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 C. What is the temperature of the Concorde's skin in flight?
Moving in the x direction, a particle carrying 1.0 m C experiences no force. What magnetic force would it experience if it moved along the y axis with speed v
Someone points out that a ball, if released from rest on a hill, will roll down the hill with increasing momentum. explain the Law of Conservation of Linear Momentum
A uniform 110 g rod with length 70 cm rotates in a horizontal plane about a fixed, vertical, frictionless pin through its center. Find the angular speed of the system at the instant the beads reach the ends of the rod
A rope is used to pull a 2.25 kg block at constant speed 7.47 m along a horizontal floor. The force on the block from the rope is 7.52 N, find the work done by the rope's force
A 17.5 kilogram block is at rest on a frictionless incline that makes an angle of 25.0 degress with respect to the horizontal. What is the magnitude of the horizontal force
A diver releases an air bubble of volume 2.2 cm3 from the depth of 10 m below the surface of a lake, where the temperature is 7°C. What is the volume of bubble when it reaches just below the surface of the lake, where temperature is 25°C.
Assume air resistance is negligible; from what height (in cm) above the compressed spring was the block dropped.
A 0.170-A current is charging a capacitor that has circular plates 15.0 cm in radius. The plate separation is 4.00 mm. What is the time rate of increase of electric field between the plates
A point charge 8.00 nC is at the center of a cube with sides of length 0.200m. compute the electric flux through the surface of the cube
A brick hangs from a string attached to the ceiling. When a horizontal force of 15 N is applied to the brick, What is the mass of the brick
A stone is thrown vertically downward from a cliff 186.0-m tall. During the last half second of its flight, Find the initial speed of the stone
What was the speed of the car before impact
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