A steel railroad track has a length of 30m when the temperature is 2 degrees celsius. what is the increase in the length of the rail on a hot day when the temperature is 38 degrees celsius? the linear expansion coefficient of steel is 11 x 10^ -6 (c)^-1

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)

Properties seen when one one substance changes to another are known as properties

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.