Physics, asked by priya1853, 1 year ago

plz describe me stiffen's law​

Answers

Answered by Anonymous
2

Here are 10 more words that are awesome when used by others to describe you, but that you should never use to describe yourself:

1. Generous. Take it from Adam Grant, an expert on the subject of giving and taking. Generosity is in the eye of the beholder.

The most generous people I know give without fanfare and without seeking accolades. Their giving is so far under the radar it's subterranean. And they don't consider themselves to be generous since they're always thinking they could do more.

All of us can be more generous than we are. While relative to what others give you might be more generous than most, if that's the case, let other people describe you that way.

After all, true generosity is often found in people who are also …

2. Humble. I like to think I'm humble. (Maybe I am, at least compared to this guy …)

But I'm really not.

Case in point. Last week, I showed two different people, totally unprompted, a photo of me with Mark Cuban at Growco

Truly humble people don't call themselves humble, if only because they're too humble to ever say it.

3. Self-disciplined. Every remarkably focused person I know readily admits he or she struggles to stay disciplined. Why? It's hard to stay on track. It's hard not to go off on tangents. It's hard not to give in and, to use a football expression, take a few plays off.

So you worked really hard and stayed on-task today. Big deal. So you resisted temptation today. Big deal. Do that for days, for weeks, for months--then come talk to us.

Self-disciplined people constantly struggle with self-discipline because they're trying incredibly hard to stay disciplined. That's why they are the last people to describe themselves as self-disciplined--they know it's a challenge that must be met each and every day.

4. Passionate. I've written about this before and it's still true. Passion is never claimed. Passion is displayed. Plus it's really easy to sound over the top; claim you're passionate about, oh, designing functional workspaces and you sound just a bit hyperbolic.

Here's a better option. Save your passion for your loved one. That person truly deserves it.

5. Witty. I've never met anyone who claimed to be witty who didn't also turn out to be insufferable.

You may, in fact, be witty. Some people are. This guy is. But you'll never hear him claim he's witty; he's too busy developing even more great material.

And if he doesn't call himself witty (or hilarious or entertaining or funny), you should call yourself witty either.

6. Empathetic. Empathy is the ability to understand and share the feelings of others.

That's great but also almost worthless unless you do something with those shared feelings: offer support, offer help, offer guidance, offer tough love, etc. Feeling empathetic is fine, but what you do with that feeling makes all the difference for the other person.

Claiming you're empathetic turns a feeling that should be all about another person into a description that's all about you--which, of course, is completely not the point.

hope this answer helpful u


priya1583766431: that was not working
Answered by Ashu686
2

The Stefan–Boltzmann law describes the power radiated from a black body in terms of its temperature. Specifically, the Stefan–Boltzmann law states that the total energy radiated per unit surface area of a black body across all wavelengths per unit time {\displaystyle j^{\star }} j^{\star} (also known as the black-body radiant emittance) is directly proportional to the fourth power of the black body's thermodynamic temperature T:

{\displaystyle j^{\star }=\sigma T^{4}.} j^{\star} = \sigma T^{4}.

The constant of proportionality σ, called the Stefan–Boltzmann constant, is derived from other known physical constants. The value of the constant is

{\displaystyle \sigma ={\frac {2\pi ^{5}k^{4}}{15c^{2}h^{3}}}=5.670373\times 10^{-8}\,\mathrm {W\,m^{-2}K^{-4}} ,} \sigma ={\frac {2\pi ^{5}k^{4}}{15c^{2}h^{3}}}=5.670373\times 10^{{-8}}\,{\mathrm {W\,m^{{-2}}K^{{-4}}}},

where k is the Boltzmann constant, h is Planck's constant, and c is the speed of light in a vacuum. The radiance (watts per square metre per steradian) is given by

{\displaystyle L={\frac {j^{\star }}{\pi }}={\frac {\sigma }{\pi }}T^{4}.} L = \frac{j^{\star}}\pi = \frac\sigma\pi T^{4}.

A body that does not absorb all incident radiation (sometimes known as a grey body) emits less total energy than a black body and is characterized by an emissivity, {\displaystyle \varepsilon <1} \varepsilon < 1:

{\displaystyle j^{\star }=\varepsilon \sigma T^{4}.} j^{\star} = \varepsilon\sigma T^{4}.

The radiant emittance {\displaystyle j^{\star }} j^{\star} has dimensions of energy flux (energy per time per area), and the SI units of measure are joules per second per square metre, or equivalently, watts per square metre. The SI unit for absolute temperature T is the kelvin. {\displaystyle \varepsilon } \varepsilon is the emissivity of the grey body; if it is a perfect blackbody, {\displaystyle \varepsilon =1} \varepsilon=1. In the still more general (and realistic) case, the emissivity depends on the wavelength, {\displaystyle \varepsilon =\varepsilon (\lambda )} \varepsilon=\varepsilon(\lambda).

To find the total power radiated from an object, multiply by its surface area, {\displaystyle A} A:

{\displaystyle P=Aj^{\star }=A\varepsilon \sigma T^{4}.} P= A j^{\star} = A \varepsilon\sigma T^{4}.

Wavelength- and subwavelength-scale particles,[1] metamaterials,[2] and other nanostructures are not subject to ray-optical limits and may be designed to exceed the Stefan–Boltzmann law.


priya1853: thanks
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