Homework Statement
Note that this formula (##C=4 \pi \epsilon_0 R##) and the others we have derived for capacitance involve the constant multiplied by a quantity that has the dimensions of a length.
Homework Equations
##\epsilon_0## has the following units in SI:
$$\frac {C^2} {N \cdot m^2}$$...
I have an acquaintance who maintains that in quantum field theory, primarily the cgs system is used. OK, I know it's not really important, but I was under the impression that everyone had switched to SI. (My book on quantum field theory has very few actual quantities with units outside of GeV...
I have been struggling through my physics class this summer (it doesn't help that 5 months worth of material is crammed into 2 months in an online classroom). This site has helped me out a lot, but I am still stumbling through understanding when to use certain equations. When I started reading...
this question is about dimensional analysis involving a number with units and a number with no units, if the question is already answered in another post please redirect me if not here is a simple example, for example, :
say i have 2[in]-1. the 1 is dimensionless and the 2 has units of [in]...
Homework Statement
At resting, can you breath sufficient air through a tube of 100 cm length and 2 cm radius?
normal resting respiration rate: 10 - 20 breaths per minute (3 - 6 seconds per breath)
normal resting respiration volume: 0.5 L
normal pressure difference in respiration = 1 mmHg =...
I have a question about a seemingly illogical and strange aspect of multiplication and unit conversion that I have never noticed until now. It concerns the issue of finding the area of a square/rectangle when the length and width are expressed as decimals/fractions. Ordinarily, when you find...
I recently come across with an amazing equation of Theory of Everything; I wonder if TOE has been formulated (???) I found this equation on a website, check it out http://www.preposterousuniverse.com/blog/2013/01/04/the-world-of-everyday-experience-in-one-equation/. While seeing briefly this...
I have a very basic questions about units for angular momentum.
The measure is in kg m^2/s
Angular velocity is in radians/s and therefore radians do not appear in the units.
Here is my question, can we leave this in degees/s? Sure its not used but is it wrong?
If we are dealing with...