Stingrays. Stingrays are a family of cartilaginous fish containing nine genera and about 70 species. They can be found in all tropical and sub-tropical seas, and there is also a freshwater-only sub-family-the river rays. A flattened body shape and disc-shaped pectoral fins help stingrays live and hide in sand and mud underwater. The famous barbed stinger on the tail is only used in self-defence, often when they are stepped on in shallow waters.
Split and merge into it. Answer by Freezinweasle. Confidence votes 7.9K. A multimeter is used for measuring electricity and because it has many different functions, it has been named a multimeter. They generally measure AC and DC voltage, amps, and resistance (ohms).
A true root mean square (RMS) multimeter is a measurement device that measures the effective level of alternating current (AC) or voltage.Root mean square is a mathematical term that suggests effective level. Other multimeters may be designed to measure just the average level.he true RMS level is defined as 0.707 of the peak level for a pure sine wave. When the waveform is not a pure sine wave, the relationship between peak and RMS will not be a scale of 1:0.707. Ad. There is a simple relationship between the VDC and the volts root mean square (Vrms).