An iron rod of length 100 m at 10°C is used to measure a distance of 2km on a day when the temperature is 40°C. Calculate the error in measuring the distance. (linear expansivity of iron = 1.2x10-⁵/°C)

How have the competing explanations' experiments on atoms affected the development of the atomic model?

Astudent wears sunglasses to her read a book more easily which wave interaction occurs as light passes from the air into the plastic lenses? a polarization b.refraction c.diffraction d. interference

You charge a parallel-plate capacitor, remove it from the battery, and prevent the wires connected to the plates from touching each other. when you increase the plate separation, what happens to the following quantities?