1.A running back runs from the 25 yard line to the 36 yard line before he was tackled, but the referees ultimately decide he was down at the 35 yard line. If the running back received the ball 2 seconds into the play and was down at 8 seconds into the play, what was the running back's velocity?​

In a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. what should be the radius of curvature of the cornea such that the image of an object 40.0 cm from the cornea’s vertex is focused on the retina?

Avector of magnitude 2 cannot be added to a vector of magnitude 3 so that the magnitude of the resultant is a. zero b. 1 c. 3 d. 5 e. 7

How is an electron dot structure used to represent a covalent bond?