chocolate lab

Distance between hotspots = 12 cm
1/2 wavelength = 12 cm = .12 m
Frequency = 2.5 * 10^9 Hz (1/s)
c = speed of lightx = 1/2 wavelength
f = frequency
Equation -> c (m/s) = 2 * x (m) * f (1/s) -> c = (2) (.12)
(2.5 * 10^9)
Experimental c = 6.5 * 10^8 m/s
Actual = 2 * 10^8 m/s

black holes

a. jets of gas, event horizon, and accretion disc
b. the gravity so strong that its escape velocity exceeds the speed of light
c. they are collapsed stars
d. It is the radius for a given mass where, if that mass could be compressed to fit within that radius, no known force or degeneracy pressure could stop it from continuing to collapse into a gravitational singularity
e.

two sides to every story

I think there is life on another planet in another galaxy. They say they've found another planet that's far enough away from the sun to support life and appears to have water on it. I believe there is life on that planet

chandra

a. would be able to read a stop sign from 12 miles away



b.

c. some of the light has been traveling through space for 10 billion years

d. has 4 pairs of mirrors

stellar spectra

1.fusion

2.closer so you can tell when their positions change

3. brightness of the star

4.emission, when something is given off and absorption is when something is absorbed

5.magnitude is how bright the star actually is, and intensity is how bright you see it

escaping the sun

A. # of layers interactions
5 24
10 157
15 174
20 479
25 947
As the number of layers increased so did the number of interactions

B. # of layers interactions
5 31
10 106
15 233
20 433
25 706
the data is about the same. The data is more accurate because there were more photons and it took the average number of interactions

C. ev nm photons sent photons detected
1.5 828 15 14
1.8 690 15 8
2.0 621 15 13
2.3 540 15 11
2.5 497 15 11
the wavelength goes down. the number of photons detected also goes down

D. ev nm gas atoms photons sent photons detected
2.2 565 O 15 14
2.2 565 Mg 15 13
2.2 565 Na 15 9
2.2 565 Ca 15 13
2.2 565 H 15 11
it didn't have much of an effect on the number of photons detected

elecromagnetic radiation

X rays and MRI's are very important to us today. They help athletes determine the seriousness of their injuries and help them find out what is broken or torn.

Mercury

a. rotates 3 times in the planets 2 years

b. radio waves went out, they got bigger so only a small part came back

c. showed the planet was in rotation

tunguska

i think it was a nuclear blast
1. It wasn't a meteor because theres no crator
2. the trees are broken like a nuclear blast
3. there was radiation in the area after the blast

a. Earth is 3ft 6.98in. away because PLuto as to be 141 ft away
b.3
c.200 lbs, saturn

earth

-Rotates at 1600 km/hr

-Rotates around it's axis every 24 hrs

-Goes around the sun at 190,000 km/hr

-Takes 365.25 days to go around the sun

- Leap year every 4 years

number of stars

stars- # of stars

ursa major- 7
ursa minor -7
corona borealis- 6

post 1

hi this is Billy