What symbal has 42 neutrons 38 protons 38 electrons and 80 as a mass number?

To find an element on the Periodic Table given its numerical information, look at the number of protons/electrons--this is the atomic number. Find the atomic number on the periodic table, and you will find your element.

In this case, we are looking for atomic number 38, which happens to be Strontium

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)