Physics - January 2007

2007-01-15 07:54:14 · 1 answers · asked by hero112@sbcglobal.net 1

I'm looking for a fairly detailed answer. I haven't really found anything useful on google except for ads selling them (for very high prices).
I know that 532nm green DPSS lasers basically have an 808nm IR diode that pumps a solid state Nd:YAG crystal to produce 1.064um IR lasing, which is then frequency doubled in a second harmonic crystal and hence produces 532nm green light. That's the sort of detail I'm looking for (preferably with types of crystal) for 473nm blue lasing action! Thanks!

2007-01-15 07:49:58 · 2 answers · asked by the_bendude 3

2007-01-15 07:47:24 · 2 answers · asked by Cami 1

2007-01-15 07:38:54 · 1 answers · asked by Muhammad A 1

1) A 50 kg crate is pulled by a 300N force at an angle of 30 degrees to the horizantal. The Force of kinematic frictioin is 65N.
What is the acceleration of the box?
2) A 15kg block is being pulled up a ramp at an angle of 35 degrees with a tension force of 150N.
a) what is the x component of the force of gravity acting on the block on the ramp?
b) what is the acceleration

2007-01-15 07:09:07 · 2 answers · asked by crazed1511 1

How do you find density?

2007-01-15 06:35:14 · 16 answers · asked by !!! 3

A 35 kg mass is allowed to accelerate down a frictionless 15 degree ramp.
a) determine the value of the x-component of the force of gravity.
b) what is the acceleration of the block down the ramp?
d) how long will it take for the block to slide 40m?

2007-01-15 06:29:55 · 3 answers · asked by crazed1511 1

A 200N force is applied to a 50kg box resting on the floor. The coefficient of kinetic friction is 0.15.
What is the acceleration of the crate?

2007-01-15 06:01:56 · 2 answers · asked by crazed1511 1

In Laymens terms please.

2007-01-15 05:57:12 · 10 answers · asked by ScienceTeacher11223344 1

2007-01-15 05:53:41 · 3 answers · asked by ScienceTeacher11223344 1

I have physics homework and I have to think of examples of pressure in every day life-such as scuba diving, weather reports, submarines or aeroplanes. Can anyone think of any others? Or give me information on pressure in an aeroplane? I can't find anything on the internet!

2007-01-15 05:44:28 · 5 answers · asked by Anonymous

2007-01-15 05:37:58 · 5 answers · asked by Anonymous

2007-01-15 05:09:12 · 6 answers · asked by psycholmatt 1

2007-01-15 05:01:33 · 15 answers · asked by Humpy 3

If a mass of m = 50.0 x 10 ^ -3 kg is attached to a spring as shown, it will bob up and down between a high point of height Hh = 0.150m, where the spring is not stretched, and a low point of height HL = 0.050m:

(a). At what height, H(infinity), will the mass ultimately come to rest?
(b). Find the spring constant, k. (The spring is not stretched when the mass is at height Hh = 15cm).
(c). Given k from (b) above, find the period, T, of oscillation.

2007-01-15 04:54:18 · 1 answers · asked by Scratch22 1

Can anyone tell me what a EM wave is ?
As in ... Radio Waves have the shortest wavelength of all EM waves. True Or False ?

2007-01-15 04:43:41 · 4 answers · asked by Anonymous

2007-01-15 04:38:21 · 14 answers · asked by BTH L 2

can lift a paper clip against the full force of the earths gravity?

2007-01-15 04:32:04 · 4 answers · asked by onelonevoice 5

2007-01-15 04:20:36 · 2 answers · asked by Greg B 1

homework question =)

2007-01-15 04:20:22 · 2 answers · asked by casaouia 2

At what rate must cylindrical spaceship rotate if if the occupants are to experience simulated gravity of .55g? Assume the spaceship's diameter is 30m and give your answer as the time needed for one revolution. please include details. THANK YOU!!!

2007-01-15 04:16:07 · 4 answers · asked by Anonymous

2007-01-15 04:05:47 · 13 answers · asked by pranjal 1

2007-01-15 03:52:06 · 9 answers · asked by thwacka-tack 3

2007-01-15 03:44:22 · 4 answers · asked by Anonymous

2007-01-15 03:37:44 · 4 answers · asked by micropterushunt 2

As in satellite there is zero gravity condition due to absence of normal reaction. But only due to absence of normal reaction we do not feel the weight but it is not like that, that g is 0 in satellite. Is it balanced by some equal and opposite acceleration? Please explain in detail.

2007-01-15 03:28:13 · 6 answers · asked by Tariq M 3

i mean, if there's not matter in space to act as a energy transferrer, then how does it travel? (light cant have mass as its totally energy)
or even if u say that photons carry that energy in that form, then is it wrong to say that in waves only energy and no matter is transferred?
THANKS A LOT FOR UR HELP......

2007-01-15 03:24:03 · 5 answers · asked by practico 1

i don't know how to start or what to write. please help

2007-01-15 03:04:58 · 1 answers · asked by bum 1

I'm willing to dig through some math. I want a professional assessment, not some popularized writeup for the general public.

2007-01-15 02:50:12 · 2 answers · asked by Charlie 1

2007-01-15 02:41:33 · 11 answers · asked by cherie b 1