A sloped line means the object is returning to the starting point. A Upward B Backwar C Missing D Downward

Two polarizers are oriented at 70∘∘ to one another. unpolarized light falls on them. what fraction of the light intensity is transmitted?

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.