- #1
Aaditya Jain
- 4
- 0
Is there any physical quantity having two different units or can it be possible that a physical quantity have two different units?
Aaditya Jain said:Is there any physical quantity having two different units or can it be possible that a physical quantity have two different units?
Maxwell’s equations have both different units and different formulas in SI units and in CGS units.Aaditya Jain said:I am saying can a quantity have two different formula's having different units
Aaditya Jain said:Good to hear from you. I am saying can a quantity have two different formula's having different units, if it acts under different conditions?
I mean to says different units in dimension. Means, can it be possible that a physical quantity has unit equals to kgm2/s2 and kgm3s5, if it acts under different conditions.256bits said:Hi Aaditya,
Not quite sure what you are asking?
Velocity uses two units, such as meter / sec - a length unit and a time unit.
Well it won't be the same physical quantity proper if the units are different.Aaditya Jain said:I mean to says different units in dimension. Means, can it be possible that a physical quantity has unit equals to kgm2/s2 and kgm3s5, if it acts under different conditions.
I think that's a good example of two different physical quantities having the same units ( as distinct from two different units applying to the same physical quantity )suremarc said:There‘s the case of torque, which is measured in N m (Newton meters). Formally equivalent to energy (1 N m = 1 J), but you have to integrate torque against angular displacement to calculate work. I had always found this curious in high school.
For the maximum values, what you say about the outcome of the definitions is true; but that's not even relevant.Dadface said:The difference between our definitions of torque and energy is that in the former case the relevant component force and distance are at 90 degrees to each other and in the latter case they are in the same direction.
Sorry I don't understand your comment. Energy and Torque are completely different quantities which can both be expressed in the same units. But why "for the maximum values"?Mister T said:For the maximum values, what you say about the outcome of the definitions is true; but that's not even relevant.
These are the conditions under which you get the maximum values:Dadface said:But why "for the maximum values"?
Dadface said:The difference between our definitions of torque and energy is that in the former case the relevant component force and distance are at 90 degrees to each other and in the latter case they are in the same direction.
Dadface said:The difference between our definitions of torque and energy is that in the former case the relevant component force and distance are at 90 degrees to each other and in the latter case they are in the same direction.
I'm still not sure what you mean by this. Whether the values be maximum or not the difference I described still holds. Also, I did not describe situations where you get maximum values, I referred to relevant "component" quantities which, depending on the relevant angles, can give values anywhere between the maximum possible and zero. I will try to describe the difference but very informally:Mister T said:These are the conditions under which you get the maximum values:
A physical quantity is a measurable property of a physical system, such as length, mass, time, or temperature.
Yes, a physical quantity can have two different units if it can be measured in two different ways or if it is expressed in different systems of measurement.
To convert between units of a physical quantity, we use conversion factors based on the relationship between the two units. For example, to convert from meters to feet, we multiply by 3.281.
Different units for the same physical quantity may be used for historical reasons or because of different conventions in different countries. Additionally, some units may be more convenient or practical for certain applications.
Yes, a physical quantity can have multiple units if it can be measured in multiple ways or if it is expressed in different systems of measurement. For example, velocity can be measured in meters per second, kilometers per hour, or miles per hour.