<span>F-number is 2.21
The f-number is defined as the ratio of the focal length to the diameter of the entrance pupil. So the equation is
N = f/D
where
N = f-number
f = focal length
D = entrance pupil
With the telescope, the entrance pupil will be assumed to be equal to the lens diameter. So substituting the known values into the equation.
N = 1.325 m / 0.0600 m
N = 2.208333333
Rounding to 3 significant figures gives a F-number of 2.21</span>
Answer:
60 Ω
Explanation:
R(com) = 15 Ω
1/R(com) = 1/R1 + 1/R2 + 1/R3 ..... + 1/Rn
1/15 = 1/20 + 1/R2
1/R2 = 1/15 - 1/20
1/R2 = (4 - 3) / 60
1/R2 = 1/60
R2 = 60 Ω
así, la combinada de resistencia necesaria es 60 Ω
Answer:
I would think a vector but double check that before turning it in
Explanation:
The combined acceleration of all the molecules of oxidized fuel as they emerge from the rocket's nozzles create the thrust that accelerates and propels the rocket
