声势

声 = 士 + 尸 + 丨 : Sherlock Holmes (sh) hears the terrifying sound (声) of bone (丨) on stone in front of the engine ((e)ng1), and he's sure that there must be a ghost (尸). Indeed it's only the bachelor (士) who wants to scare Sherlock.

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.