Answer:
Frequency (f) can be defined as the number of waves or crests or number of troughs that pass a point per unit second. It can be measured in Hertz (Hz) or 1/s.
Answer:
Explanation:
To calculate the angle of refraction you can use Snell's law:
With what we have:
Answer:
8 electrons
Explanation:
to solve this problem it is necesarry to take into account the nume of the other quantum number l, ml, and ms:
l: angular quantum number = l=n-1
ml: magnetic quantum number = ml=-l,...,0,...,+l
It is also neccesary to take into account each n state.
for n=1
- l=1-1=0
- ml=0
each ml state has two electrons with antiparallel spins. Hence, for n=1 you have 2 electron.
forn n=2
- l=2-1=1
- ml=-1,0,1
each ml state has two electrons. hence, for n=2 you have 3*2=6 electrons.
Finally, the total of electrons is 6+2=8
Vi = As * h = 1000 * 30 = 30,000 cm^3 = Vol. of the ice.
Vb = (Di/Dw) * Vi = (0.9/1.0) * 30,000 = 27,000 cm^3 = Vol. below surface - Vol. of water displaced.
27,000cm^3 * 1g/cm^3 = 27,000 grams = 27 kg = Mass of water displaced.