Sam wants to know how fast his brother can run. He knows the time it took for his brother to run from the starting line to the finish line. What else does he need to know in order to calculate the

speed of his brother?

O He needs to know what time his brother ate lunch.

O He needs to know the direction his brother ran.

O He needs to know the distance from the starting line to the finish line.

When the earth was formed and cooled, why did nickel and iron end up in the center of the earth while basalt and granite ended up in the outer layers

1) this is the structure in the cell nucleus that houses a cell's genetic information

Which is a difference between molecular compounds and ionic compounds? select the correct answer below: question 5 options: molecular compounds typically form between a metal and a nonmetal, while ionic compounds typically form between nonmetals. molecular compounds result from the transfer of electrons between atoms to form ions, while ionic compounds result from the sharing of electrons between neutral atoms. molecular compounds are formed of discrete, neutral molecules, while ionic compounds are formed of large repeating arrays of opposite charges. molecular compounds have high melting points and high boiling points, while ionic