A spring has a natural length of 10 cm. If a 23-N force is required to keep it stretched to a length of 39 cm, how much work is required to stretch it from 10 cm to 22 cm

Two polarizers are oriented at 24.0∘ to one another. light polarized at a 12.0-degree angle to each polarizer passes through both. what is the transmitted intensity (%)?

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid

Sound is a disturbance that travels through a medium as a