Because the math is a lot easier that way. Most countriesuse SI units for the same reason. The US really bungled its introduction of SI, so people got the idea it was "hard" when in fact it's a lot simpler if you just force yourself to get used to it.
Scientists everywhere use SI units... for the most part. There are a few recidivists who have a preference for other units under certain circumstances, such as for example preferring calories to joules for thermodynamics. It's also fairly common for people to use the so-called "cgs" units instead of the modern SI "mks" units (centimeter/gram/second as opposed to meter/kilogram/second).
The SI, or International System.
true or fulse
Yes.
I have NO idea
most of the world does SI so more people can understand with it in SI units
inches
I need help
The idea is to use an international standard - the same units everywhere.
most of the world does SI so more people can understand with it in SI units
scientists frequently use Celsius
Thickness of hair. However, most measurments at that level of precision would be made by scientists and they would use SI units, not pointless units like inches.
Not only scientists use them; everybody uses most SI units - except in a few countries, such as the United States. As for the reason, it is mainly (1) for standardization. It is convenient for people all over the world to use the same units. Also, there are two other reasons: (2) Conversions are simpler. To convert 17 km to meters, just multiply by 1000 (add 3 zeroes). This can be done in your head. Now, try converting 17 miles into feet! (3) The SI units are interrelated - they form a consistent set of units. This simplifies many formulae.
The name for the units scientists use for circles are degrees.
Mainly to use an accepted standard (scientists all over the world use the same units). Also, it is easier to do calculations in metric units.
To measure temperature, scientists use:KelvinCelsiusFahrenheit.
Scientists everywhere use SI units... for the most part. There are a few recidivists who have a preference for other units under certain circumstances, such as for example preferring calories to joules for thermodynamics. It's also fairly common for people to use the so-called "cgs" units instead of the modern SI "mks" units (centimeter/gram/second as opposed to meter/kilogram/second).