EVERYDAY SCIENCE

SCIENCE

PHYSICAL SCIENCES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which unit is an SI base unit?
A
liter
B
gas
C
kilogram
D
ice
Explanation: 

Detailed explanation-1: -The SI unit of mass is the kilogram (kg).

Detailed explanation-2: -The kilogram, symbol kg, is the SI unit of mass. It is defined by taking the fixed numerical value of the Planck constant h to be 6.626 070 15 x 10–34 when expressed in the unit J s, which is equal to kg m2 s–1, where the metre and the second are defined in terms of c and Cs.

Detailed explanation-3: -Within SI there are seven base units upon which all others are based. The base units include: mass, length, time, temperature, amount of substance, electric current, and luminous intensity.

Detailed explanation-4: -The prefixes used in the metric system and their values are defined in Table 1 below. However, the values you will most frequently encounter in biology are kilo-(1000x the base unit), milli-(0.001x base), micro-(0.000001x base) and nano-(0.000000001x base).

Detailed explanation-5: -The basic unit of mass in the metric system is the gram.

There is 1 question to complete.