A bird perched in a tree is balanced or unbalanced

Janelle made a hypothesis bout the uneven temperatures inside her house during winter. she believes that 50% of the ducts are blocked and she plans to investigate. if she wants to prove her hypothesis using scientific processes what should she do next?

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

How many atoms of nitrogen are in the chemical formula ni(w on