Answer:
Explanation:
Let the first height be h . second height .75h
third height .75h . fourth height .75²h
fifth height .75²h , sixthth height .75³ and so on
Total distance consists of two geometric series as follows
1 ) first series
h + .75h + .75²h + .75³h......
2 ) second series
.75h +.75²h +.75³h + .75⁴h .......
Sum of first series :
first term a = h , commom ratio r = .75
sum = a / (1 - r )
= h / 1 - .75
= h / .25
4h
sum of second series :--
first term a = .75 h , commom ratio r = .75
sum = a / (1 - r )
= .75h / 1 - .75
= .75h / .25
3h
Total of both the series
= 4h + 3h
= 7h .
h = 1 m
Total distance = 7 m
Answer:
It applies to diverse phenomena
Explanation:
not sure if u need one, just ask if you do :D
Answer:
Either absorption or emission lines
Explanation:
For the radial speed of an astronomical object to be determined with a Doppler shift, what must we be able to see in the object's spectrum, Either absorption or Emission lines.
Asorption and Emission line explained below;
- Absorption lines are usually seen as dark lines, or lines of reduced intensity, on a continuous spectrum.
- An emission line will appear in a spectrum if the source emits specific wavelengths of radiation.
That's true. The current is the same at every point in a series circuit.
