Which of the following variables would you need in order to calculate how long it would take a horizontally launched projectile to hit the ground?

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

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?

The radius of an atom is closest in size to a