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The Concorde is 62 m long when its temperature is 23°C. In flight, the outer skin of this supersonic aircraft can reach 106°C due to air friction. The coefficient of linear expansion of the skin is 1.7 10-5 (C°)-1. Find the amount by which the Concorde expands.
At t=0 a grinding wheel has an angular velocity of 20.0 rad/s. It has the constant angular acceleration of 29.0 rad/s^2 until a circuit breaker trips at time t = 2.20 s. From then on, it turns through an angle 435 rad as it coasts to a stop at cons..
A luminous object is 4.00m for a wall. You are to use a concave mirror to project an image of the object on the wall with the image 2.25 times the size of the object, how far should the mirror be from the wall
Find the typical speed for a tsunami. (Note down that in the open ocean, tsunamis generally have amplitude of less than a meter, allowing them to pass ships unnoticed. As they approach shore, however, water depth decreases and the waves slow down. Th..
An L-R-C series circuit is connected to a120?Hz ac source that has vrms = 80.0V. What average power is delivered to the circuit by the source
A 50 kg motionless student stands adorably on a frozen friction surface. What is the velocity (vector) of the adorable student after catching the shot
During WWII some paratroopers landed in gliders instead of dropped by parachute. The gliders had no power of their own, Find the lift force provided by the glider's wings
A light spring-gun projectile launcher is mounted on an 0.533 kg air track glider. What is the speed of the air-track glider after the gun is fired
Suppose I have two infinite wires, one on the y axis and one on the x axis, each charged uniformly with lamda C/m. Find an expression for the electric field E at any point in the x and y plane as a function of x and y.
A coil has an inductance of 0.05 H and a resistance of 52 O. The coil is connected to a 6.0-V battery. After a long time elapses, the current in the coil is no longer changing. What is the rate of energy dissipation in the coil
A box is dropped from a spacecraft moving horizontally at 27.0 m/s at a distance of 155 m above the surface of a moon. The rate of freefall acceleration on this airless moon is 2.79 m/s2.
A worker on a scaffolding 65 ft above the ground needs to lift a 390 lb bucket of cement from the ground to a point 30 ft above the ground by pulling on the rope weighting 2 lb/ft . Set up the integral of how much work is required (just give the i..
question1a 575g air-track glider attached to a spring with spring constant 14.0 nm is sitting at rest on a frictionless
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