Question

Howard is designing a chair swing ride. The swing ropes are 4 meters long, and in full swing they
tilt in an angle of 23º. Howard wants the chairs to be 3.5 meters above the ground in full swing.
How tall should the pole of the swing ride be?
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Answer 1

El gas helio se encuentra en un recipiente rígido a una temperatura de 20°C, en donde sufre incrementos sucesivos de temperatura en 20K y 5°C, y luego disminuye en 10°C. Halle la temperatura final del gas en °F.