The area thermal expansion coefficient relates the change in a material's area dimensions to a change in temperature. It is defined as αA=1AdAdT α A = 1 A dA dT . Explanation: relationship between the area and linear thermal expansion coefficient is given as the following: αA=2αL α A = 2 α L.

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage

The system is released from rest with the cable taut, and the homogeneous cylinder does not slip on the rough incline. determine the angular acceleration of the cylinder and the minimum coeffi cient s of friction for which the cylinder will not slip.

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o