10ω resistor and a 5 ω are connected in parallel. this pair is then connected in series in with another 4 ω resistor. what is the equivalent resistance of the circuit?

According to social exchange theory, altruistic behaviors benefit the individual who performs them. t/f

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?

Assume that a person skiing high in the mountains at an altitude of h = 15100 ft takes in the same volume of air with each breath as she does while walking at sea level. determine the ratio of the mass of oxygen inhaled for each breath at this high altitude compared to that at sea level. assume that the air composition (i.e. % of air that is oxygen) is the same at sea level as it is at 15100 ft.