Acar waits at a ref light for a few seconds, and then accelerates straight ahead to 54km/h in 3.1s and then cruises at a constant speed for 75m. find the total distance and time travelled

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?

Ethanol has a heat of vaporization of 38.56 kj/mol and a normal boiling point of 78.4 c. what is the vapor pressure of ethanol at 14 c?

An atom that has gained or lost electrons is called an _