Recent content by GravityGirl

i don't understand. so in a spin soild there is short range order like nearest neighbor? so what does that mean if a spin liquid doesn't have strong spin correlations? what i understand is that a spin soild/liquid arises from two things...i am focusing on the pryochlore structure where the...

What is a spin liquid as opposed to a spin solid or a spin glass? I know that a spin liquid is generally defined by geometric frustration in the electronic spins of that material (i.e. pryochlore structure)...but how is this different from a spin solid? Can it be that the lattice of the...

does it have to do with that fact that a proton has a longer wavelenght than the electron at the same energy?

An electron and proton with the same energy E approch a potential barrier whose height V is greater than E. Do they have the same probabilty of getting through? If not, which has a greater probability? Why is that true? So if the electron and proton have the same energy, that means that the...

The atoms of a solid possesses some certain min. zero point energy even at 0k, while no such restriction hold for the molecukles in an ideal gas. Use the uncertanity principle to explain these these statements. ok, so what i am thinking is the at 0k the atoms of a solid have some energy...

should i use the equation E(light)=hc/wavelength? what is h in this equation?

should i use the equation E(light)=hc/wavelength? what is h in this equation?

a 1-kW raido transmitter operates at 880kHz. How many photons per second does it emit? Power=work/time Power=change in KE/time f=1/T T=1/880kHz so 1 kw=change in KE/1.136x10^-6 change in KE=.00136 J i don't know if i am doing this right. please point me in the right direction.

a 1-kW raido transmitter operates at 880kHz. How many photons per second does it emit? Power=work/time Power=change in KE/time f=1/T T=1/880kHz so 1 kw=change in KE/1.136x10^-6 change in KE=.00136 J i don't know if i am doing this right. please point me in the right direction.

near point is the nearest point of an object that a relaxed eye can see. usually for a normal eye it is about 25 cm.

i tired 2.5 cm and 11.5 cm and that didn't work. any other suggestions

A 77 year old man has a near point of 115 cm. What power lens (in diopters) does the man need in order to be able to see an object clearly at the normal near point of 25 cm? Assume that the man will get contact lenses, that is neglect the two centimeters that glasses would be away from the eye...

ok so the voltage drop across the galve. is = to the voltage drop across Rs and Vg=IR=.131*81=10.61 so Vr=10.61=RI and that is 10.61=R(1.1-.131)=10.95 ohms

ok...i got the first one...but i am still confused on the second part where am i going wrong?

part 1: A galvanometer has a coil with a resistance of 81 W. A current of 131 mA causes full scale deflection. Calculate the value of the series resistor that is required in order to use the galvanometer as a Voltmeter with 40 V full scale. so to make a voltmeter, the galvanometer and...