The two objects are net force and mass.
The net force is the total amount of force going on one direction, and mass is amount of matter in which it's contained in a particle/object.
Hope this helps!
Its A.It can sometimes reject important new ideas or novel techniques.<span>
</span>
Answer:
4.5 multiplied by 10, to the -10th power.

Yes! since its clear, <span>due to formation of ammonium hydroxide in water.</span>