Um bloco de ferro tem um volume de 50cm³ a 0°C. determine até qual temperatura devemos aquecê-lo a fim de que seu volume seja igual a 50,425cm³. Dado: coeficiente de dilatação linear do ferro = 12.10^-6 °C^-1.

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There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.