Q

1. What is the Q-Factor of a laser cavity? What is the energy stored in it?

The .5% is the energy loss per cycle of the *incident* light. That means 95% is reflected. So the loss per cycle is 0.005 times 1/(1+.95) of the total energy in the cavity (since the latter includes both incident and reflected), or 0.00256. According to your definition, then, Q is 2 pi times the inverse of this.

2. What is required to achieve the highest Q in a resonant LC circuit?

For any given inductance, the highest “Q” in an LC resonant circuit is obtained when the resistance of the inductor is minimized. Capacitance losses (dissipation) are assumed to be zero or negligible. “Q” is basically the ratio of power stored per cycle divided by the power lost per cycle in a resonant circuit. For LC circuits, the “Q” is given by 2*pi*f*L/R, where f is the resonant frequency in hertz, L is the inductance in henries, and R is the inductor wire resistance in ohms. This implies that an infinite “Q” could be obtained by winding the inductor with superconducting (zero resistance) wire. Thus, no power would be lost in the inductor. Indeed, this would boost the “Q” considerably, but there would be losses in the capacitance dielectric that would then become predominant. Perhaps a vacuum-insulated capacitor, immersed in liquid nitrogen along with the resonating superconducting inductor, would yield the largest “Q”. But “Q” still wouldn’t be infinite: the darned thing would radiate some electromagnetic energy!

3. What is the charge Q on the positive plate of the capacitor?

ε₀=8.854e-12 C²N⁻¹m⁻² S=0.042 m² Δd=0.003 m ΔU=100 V d=initial distance between the plates U=initial voltage between the plates Q=charge on the positive plate (a) C=ε₀S/d is the initial capacitance of the parallel-plate capacitor C1=ε₀S/(d+Δd) is the capacitance after moving the plates U=Q/C U+ΔU=Q/C1 is the voltage after moving the plates == Qd/(ε₀S)+ΔU=Q(d+Δd)/(ε₀S) == ΔU=Q*Δd/(ε₀S) Q=ε₀S*ΔU/Δd Q=8.854e-12*0.042*100/0.003=12.4e-9 C (b) W=0.5QU initial energy W1=0.5Q(U+ΔU) ΔW=W1-W=0.5Q*ΔU=0.5*12.2e-9*100 ΔW=0.62e-6 J

4. How would you describe the tendency to Answer the Q influenced by judgments made about the Q-asker from the Q?

My judgment is that you are more enthused with questions today than I can muster.

5. How many violations does it take on election Q before your account gets suspended?

this is my first account , Ive had allot of violations but still rolling so i dont know

6. How to introduce special symbols and drawing in Q and A of Physics and Mathematics?

To do it here, you can copy paste the symbols given below in a word file and preserve for use by copy-pasting. The method of generating the symbol is like this. If you want to type Greek symbol alpha, type alpha followed by semicolon ( ; ). I cannot type semicolon here because if I do it you will no longer see what I want to instruct but you will see the Greek symbol alpha. After that when you see in preview, you will not see alpha with ; but will see the Greek symbol alpha. If you want mathematical sign of summation type Sigma followed by ; without leaving space and in preview you will see proper summation symbol. S in sigma should be a capital letter. With first letter capital you will get capital letter symbols in Greek. Now pasting the symbols below for your use. α β γ δ θ φ √ ± ° ∫ ∞ ≤ ≥ ≠ ∪ ∩ Δ  Φ ω Ω π μ ε ≥ ≤ ≦ ≧ ∈ ≅ λ x² ρ If you make a mistake in typing spelling of symbol it will not get converted to symbol, e.g., the spelling of lamda written by you is incorrect. It is lambda. So if you type lambda followed by ; without space, you will get symbol printed when you view in preview and then it will remain in symbol form. If you want various mathematical operators in word file (not here in Yahoo Answers), you can use additional tool of microsoft office called 'equations editor' which you have to add by going to control panel, add/remove program, microsoft office and add in microsoft tools 'equations editor and update. I have used it in my free educational website www.schoolnotes4u.com and you can see in Math Problems -XII Indefinite Integration as to how perfectly mathematical symbols get printed.

7. They say that using q-tips in your ears is not a good idea. How come? What should I use, instead? ?

8. Is it possible that some Q and A deletions and account suspensions are technical errors?

To a large extent the system is controlled by automated systems that don't know right from wrong. No real person actually looks at an alleged violation until the appeal stage and very few appeals are won. Injustices probably occur by the thousands as there are 90 million users.

9. My Motorola Q phone has been locked and i forgot the password . How to unlock it ?

Well, if you forget the password of a Windows Mobile device, the way to remove the password is to do a hard reset. The main drawback of this is that it erases everything and puts the phone back to factory settings. All installed apps and personal data will be gone. If you can stand to lose everything do this: 1. Be sure to have full charge on your battery 2. Hopefully you have backed up all data on your PC. 3. Power off the Motorola Q 4. Power on the Motorola Q while pressing and holding center button and power button. 5. Keep holding until you get a Master Reset? screen. 6. Click the left softkey for Yes and the phone will wipe and reload the OS from ROM BE SURE NOT TO REMOVE THE BATTERY WHEN YOU DO THIS or you may brick your phone.

10. How do I make chicken like the stuff served at Q Cup?

Go for the Q-pop Chicken and Mango Slushy. Sorry the recipe is proprietary

11. How do I get rid of an earwax buildup without using Q-tips?

Murine makes a great product that is available at any drug store. It contains a solution that you put in your ear and let sit for about 3 mins. After that, you use the enclosed bulb to rinse it out. Works great!

12. Where can I buy build-in BB-Q grill and coal tray that is made to measure?

as for the grill you could cut that down to size , for the tray you could make one yourself , you could check out your nearest sheet metal workshop and enquire there , they would happily make one for you ,

13. What are the chief differences between a scientific Q a philosophy Question?

Science is HOW, Philosophy is WHY. In science one poses a question that should be able to be answered the same way by everyone with the same understanding of the data. In philosophy, each questioner/hearer can apply their own interpretation, and rarely does anyone hope to achieve consensus or even very similiar results

14. Does anyone know of fun snacks for kids that start with the letter Q?

queso (that's spanish for cheese..lol) sorry that's all I can think of...

15. What is a term that starts with the letter Q or X that relates to the Holocaust?

Xenophobic was also my immediate thought for X. For Q, first thought of Quisling, but while it's a WWII term, it isn't exactly related to the Holocaust. Maybe Quixotic with regards to those who stubbornly deny it ever happened? Of course, there's Quiet Of The Grave, for the millions of victims...

16. If I start using a different QA website, will yahoo send me a cheat notice?

They will do worse than a cheat notice. The very first time you clicked Y!A you were injected with a homing device. They will send you to room 101 for an adjustment, then re-release back into our fold.

17. How do you get cotton from the Q-tip out of your ear?

TWO SUGGESTIONS... FIRST, TAKE A FRESH Q-TIP, VERY LIGHTLY MOISTEN IT WITH WATER. PUT IT IN THE EAR, TWISTING IN ONLY ONE DIRECTION, THEN AS YOUR STILL TWISTING SLOWLY PULL IT OUT. THE ORIGINAL SWAB TIP SHOULD HAVE WRAPPRD ARROUND THE NEW, DAMP SWAB. OR TRY FLUSHING-OUT THE EAR, USING WARM WATER FROM AN EAR DROPPER, OR SIMILAR DIVICE LIKE A FOOD BASTER.

18. What is the relevence of the letter Q in the English alphabet?

Quintessential query!

19. How do I make puppets form Avenue Q?

Here's the site I recommend -- ProjectPuppet.com They have patterns that you can use. For Rod and Nicky I'd use: * The Roly Puppet Pattern * The Pinhead Puppet Pattern The material you need for Muppet-style skin is Antron Fleece. Good Luck!

20. How to download music to the motorola q 9c?