a sensitive gravimeter at a mountain observatory finds that the free fall acceleration is 0.0075 m/s^2 less than at sea level. What's the observatory's altitude

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same

How does the entropy of steam compare to the entropy of ice?