Una varilla de hierro de 7 m de largo se encuentra a 50 °C, después de soldar su
temperatura aumenta a 145 °C. ¿Cuál es
su longitud final?​

True or false graphs must include scales that increase by the same amount

In a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. what should be the radius of curvature of the cornea such that the image of an object 40.0 cm from the cornea’s vertex is focused on the retina?

Explain the difference in reactivity of the elements based on their electron configurations.