The concorde was a supersonic aircraft used for trans-atlantic travel in the 1980s and 1990s, having a length of 62.5 m when sitting on the ground on a typical day when the temperature is 16.0 ∘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 25.0 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 α = 2.40×10−5 /∘c

Rank the torques on the five doors shown in the figure above from least to greatest. note that the magnitude of all the forces is the same

In one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.

Your starship, the aimless wanderer, lands on the mysterious planet mongo. as chief scientist-engineer, you make the following measurements: a 2.50-kg stone thrown upward from the ground at 14.0 m/s returns to the ground in 5.70 s ; the circumference of mongo at the equator is 2.20×10^5 km ; and there is no appreciable atmosphere on mongo. (a) the starship commander, captain confusion, asks for the following information: what is the mass of mongo? (b) if the aimless wanderer goes into a circular orbit 2.20×10^4 km above the surface of mongo, how many hours will it take the ship to complete one orbit? (c) an unmanned spacecraft is in a circular orbit around the moon, observing the lunar surface from an altitude of 44.0 km . to the dismay of scientists on earth, an electrical fault causes an on-board thruster to fire, decreasing the speed of the spacecraft by 23.0 m/s . if nothing is done to correct its orbit, with what speed (in km/h) will the spacecraft crash into the lunar surface?