Blood stored at 4°C lasts safely for about 3 weeks, whereas blood stored at -160°C lasts for 5 years. What is the temperature for the blood that keeps longer using the Kelvin scale? A. 113 K
B. 120 K
C. 100 K
D. 143 K

Please help! 30 points and I will mark brainliest! Thanks!

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

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.

At the negative terminal of the battery the electron has electric potential energy. what happens to this energy as the electron jumps from the negative to the positive terminal?