Which of the following is not a reason why gravity is important in our lives a. it keeps the moon in orbit around the earth b. it keeps the earth in orbit around the sun c. it keeps the galaxies from flying apart d. it keeps water molecules together in a cup

You have been called to testify as an expert witness in a trial involving a head-on collision. car a weighs 1515 lb and was traveling eastward. car b weighs 1125 lb and was traveling westward at 44.0 mph. the cars locked bumpers and slid eastward with their wheels locked for 22.5 ft before stopping. you have measured the coefficient of kinetic friction between the tires and the pavement to be 0.750 . how fast (in miles per hour) was car a traveling just before the collision? (this problem uses english units because they would be used in a u.s. legal proceeding.)

Although light from the sun appears white, it is actually made up of a lot of different colors. this portion of the electromagnetic spectrum, we call white light is referred to as within the electromagnetic spectrum.

Zeros that follow non-zeros numbers and are also to the right of a decimal point are significant