How much energy is produced from a object that is 4kg and traveling at 10 meters per second?(mass)x(velocity)2

What are the charges of the subatomic particles by choosing the answer from the drop down menu. protons have a (+1,0,or-1). (protons,neutrons,electrons) have a 0 charge. 3.) electrons have a (+1,0,-1)

0.09 moles of sodium sulfate in 12 ml of solution

Determine the reaction and balance the following equations urgent due in the morning