With a stop watch or a clock. If you're asking how do we determine what a second is (In the SI- International system of units), then that is determined by the oscillation of a Cesium Atom's Microwave. No matter what the conditions, the cesium atom's full oscillation will always equal one second. No matter where in the world. Really neat phenomenon.
your heart beats one time a second
A nanometre is a measure of distance, metres per second is a measure of speed. The two measure different things and one cannot be converted to the other.
Measure one part, then measure the second part. Add the two measurements together and you have the answer
3 to 1
A light year is a measure of distance, not time. A light year is the distance that light will travel in one year. One light second is 186,000 miles. A light year is a measure of distance, not time. A light year is the distance that light will travel in one year. One light second is 186,000 miles.
An inch is a measure of distance. A second is a measure of time. The question therefore is not valid.
your heart beats one time a second
A star's luminosity is the measure of the total energy radiated by the star in one second.
heat energy produced in one second.
A nanometre is a measure of distance, metres per second is a measure of speed. The two measure different things and one cannot be converted to the other.
Measure one part, then measure the second part. Add the two measurements together and you have the answer
You cannot. Metres per second is a measure of speed whereas minutes is a measure of time. The two measure different things and, according to basic principles of dimensional analysis, conversion from one to the other is not valid.You cannot. Metres per second is a measure of speed whereas minutes is a measure of time. The two measure different things and, according to basic principles of dimensional analysis, conversion from one to the other is not valid.You cannot. Metres per second is a measure of speed whereas minutes is a measure of time. The two measure different things and, according to basic principles of dimensional analysis, conversion from one to the other is not valid.You cannot. Metres per second is a measure of speed whereas minutes is a measure of time. The two measure different things and, according to basic principles of dimensional analysis, conversion from one to the other is not valid.
2.2
It depends on the context. A second can be a measure of time or of an angle.
A second is a measure of a time interval that has no relevance to an area measurement.
Gigahertz
An "astronomical unit" is a measure of distance - based on the distance from the Earth to the Sun. "meters per second" is a measure of speed. These are not convertable one to the other.