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.

c. 65°

step-by-step explanation:

we are given a triangle with two known angles, 62° and 53°, while the third angle x is unknown and we are to find its value.

we know that the sum of angles in a triangle is equal to a total of 180 degrees. so we can write it as:

x + 62° + 53° = 180°

solving to find the value of x:

x = 180 - (62 + 53) = 65°

therefore, the value of x in this triangle is 65°.

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