Why was mendeleev’s work so important? a. he scientists find the mass of each element. b. he showed repeating patterns in the properties of the elements. c. he scientists know where to find new elements.

thats a little if u want the answer just look it up on google thats what i do haha : )

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)

50.23 i believe is correct but don't quote me on that.