Acopper rod and an aluminum rod of equal diameter are joined end to end in good thermal contact. the temperature of the free end of the copper rod is held constant at 100°c, and that of the far end of the aluminum rod is held at 0°c. if the copper rod is lcu = 0.698 m long, what must be the length of the aluminum rod so that the temperature at the junction is 50.0°c?

The place you get your hair cut has two nearly parallel mirrors 6.00 m apart. as you sit in the chair, your head is 2.00 m from the nearer mirror. looking toward this mirror, you first see your face and then, farther away, the back of your head. (the mirrors need to be slightly nonparallel for you to be able to see the back of your head, but you can treat them as parallel in this problem.) how far away does the back of your head appear to be?

True or false graphs must include scales that increase by the same amount

Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 ✕ 103 s. given that the charge of an electron is 1.6022 ✕ 10−19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.