The second. Also, several units used with electricity: Volt, Watt, Ohm, and others.
Both. It is the inverse of the unit of time (second) which is used by both systems.
Depends on your ruler. I make sure BOTH are on any ruler that I buy.
Matter is defined as that which has mass and occupies space. There are procedures to measure both. Even if you can't measure the mass of an object directly (such as a gas), you can still determine it's mass by measuring the space it occupies. Pressure is one way to measure the mass of gas by the amount of space it occupies.
There are thousands of measurement units in both systems and it is not possible to list them all.
The United States of America is the only industrialized country that does not use the metric system as its primary system of measurement. Of course, scientists use the metric system even in the USA. But most Americans use the English system instead.
They are both systems of measurement except that the metric system is simpler and used by the majority of the world.
The SI system. (Metric, base ten)
Both. It is the inverse of the unit of time (second) which is used by both systems.
Both imperial and metric is currently used in the UK. The metric system is exclusively taught in UK schools. So, eventually, as children become adults, the metric system will become the norm. Resistance to using the metric system is usually from adults who were taught the imperial system when they were schoolchildren.
Those two nations are both Liberia, Myanmar, and the USA.
For just about any type of unit, different units are used between the English system and the SI (metric) system. In both systems, there are units for length, area, volume, mass, force, temperature, etc.
The unit of time ... the 'second' ... is the same in both systems of measurement.
Depends on your ruler. I make sure BOTH are on any ruler that I buy.
Matter is defined as that which has mass and occupies space. There are procedures to measure both. Even if you can't measure the mass of an object directly (such as a gas), you can still determine it's mass by measuring the space it occupies. Pressure is one way to measure the mass of gas by the amount of space it occupies.
There are thousands of measurement units in both systems and it is not possible to list them all.
The United States of America is the only industrialized country that does not use the metric system as its primary system of measurement. Of course, scientists use the metric system even in the USA. But most Americans use the English system instead.
The English system is based on arbitrary numbers and measurements, such as 12, 36, and 5,280. The Metric system - every aspect of it - is based on even multiples of ten, both going upward, and going downward. Just ten. Nothing else.