What happens when infrared hits a shiny surface

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?

How to tell if a molecule is polar or nonpolar with electronegativity

Select all that applywhat are some basic resources a family is expected to provide for children? educationclothesspending