Tres barras hechas de materiales diferentes están acopladas y colocadas entre dos paredes a una temperatura T1 = 12 ºC. Determinar la fuerza ejercida sobre los apoyos (rígidos) cuando la temperatura alcanza T2 = 18 ºC. Las propiedades de los materiales son Yacero = 200000 N/mm2, αacero = 12 x10-6 ºC-1, Ylatón = 100000 N/mm2, αlatón = 21 x10-6 ºC-1, Ycobre = 120000 N/mm2, αcobre = 17 x10-6 ºC-1.

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step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.

hi there!

first we need to find out how much they are adding to each number to make the next number.

ex: 4 + 4 = 8, 8 + 8 = 16, and so on.

so continuing with 32,

32 + 32 = 64

64 + 64 = 128

128 + 128 = 256

256 + 256 = 512

4, 8, 16, 32, 64, 128, 256, 512

the 8th term of the sequence will be 512

hope this ! ~