Suppose that a P-wave ray produced by an ex plosion detonated 5 m beneath the ocean sur face travels down through the water and reaches solid rock on the ocean bottom at an angle of incidence i 30 degrees. P-wave speed is 1500 m/s in the water and 5000 m/s in the rock. a. How many reflected and refracted rays are generated by this incident ray? b. What is the angle of refraction of the re fracted P-wave ray?

AnswerA E I O U SOMETIMES Y SOMETIMES Y

Explanation:

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

molecules are free to separate from each other and will take on the shape of the container. molecules move completely at random and high speeds. they vibrate in a fixed position and do not move around much. molecules expand to the edge of their container.