-Several numbers are considered significant in a measurements. Non-zero digits are always significant. Thus, 569 has three significant digits, and 69.35 has four significant digits.
-Zeros are sometimes significant and sometimes aren't:. Zeroes placed before other digits are not significant; 0.0968 has three significant digits.
-Zeros placed between other digits are always significant; 70063 kg has five significant digits. Zeros placed after other digits but behind a decimal point are significant; 7.90 has three significant digits. Zeros at the end of a number are significant only if they are behind a decimal point.
A circuit breaker is a switching mechanism that interrupts the current that is irregular or fault. It is a mechanical system that interferes with high magnitude (fault) current flow and also performs a transfer operation. Hope this helps :)
The atomic number is the number of protons. So, you can subtract the atomic number from the mass number to find the number of neutrons. I hope this helps! :)
Explanation: The color of a star is linked to its surface temperature. The hotter the star, the shorter the wavelength of light it will emit. The hottest ones are blue or blue-white, which are shorter wavelengths of light. Cooler ones are red or red-brown, which are longer wavelengths.
