弱勢

弱 = 冫 + 弓 : Rachel Rhinoceros (ru) created a piece of art in the observatory's bathroom (o4). She joined many composite bows (弓) by sticking their ends into popsicles (冫) which weren frozen again afterwards. Her whole construction is a huge armchair, but it is very fragile and weak (弱), so Rachel puts on it many of these "handle with care" stickers.

势 = 力 + 执 : The space station's scientists want to conduct an experiment in the space station's bathroom (Ø4) to find the momentum (势) and potential energy (势) of a pendulum in zero gravity. Everything is already set up, they just have to push the power button (力)—but Sherlock Holmes (sh) insists on seeing their license (执) first before he allows it.