What time does it take for mercury to make one full rotation?

Why is Steel is coated with thin layer ceramic to help protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? What features can you see on the right os coxae? What is called two or more substances that are mixed together but not chemically combined? What was the era when most of our limestone and coal formed? What is the better carrier of sound air or strings? How many inches in 79 Milimeters? Do tsunamis form at plate boundaries? What type of cellular respiration do humans perform under normal circumstances? What can microbes eat? A flask of water rests in a scale If you dip your finger into the water without touching the flask will the reading on the scale increase decrease stay the same or behave unpredictably? How many awards did primatologists Jane Goodall win? Through what process do plants store solar energy? Does Oregon have tsunamis? Why is godfather called ninong in the Philippines? Was wegener's idea about how mountains form consistent with his hypothesis of continential drift? Is a mammal a carnivore? What do you meant by gepgraphy? What analytic method is more preferrable betwee GC and HPLC? How is the velocity-time graph related to the distance traveled? What is the differences between Etna and Vesuvius?