I’m pretty sure the immediate answer is 2. Using the equation 60N=(30kg)x2(whatever unit of measure) also it will change because if you change the mass or the Net Force, your going to have to redo the equation based on the new information.
The correct answer is the 3rd option Ductility is a property of a metal. It is the ability of a material to deform under tensile stress.It is characterized by the ability to be stretched into wire-like form which is an ability of metals.
Yup go this website for more information http://dwb.unl.edu/calculators/activities/BalEqn.html
The answer is 9. Calcium nitrate is made up
of 3 different elements that equal 9 atoms.