Because the atsmosphere in the sky makes it less gravity so air craft needs these cabins
Answer:
because the focal length is negative.
Explanation:
Power of a lens (P) is the reciprocal of its focal length (f).
Answer:





Explanation:





The capacitive reactance is given by:

Now, The inductive reactance is given by:

By the ohm´s law, the electrical impedance is:

So


The total impedance is:
(*)
Where X is the total reactance given by:

Let´s calculate the real part of Z using (*):


Finally the angle between the current and the voltage is equal to the impedance angle:


Answer:
192Ns
Explanation:
The following were obtained from the question:
M = 2kg
F = 8N
t = 24secs
Impulse =?
Impulse = Ft
Impulse = 8 x 24 = 192Ns
Answer:0.246 m
Explanation:
Given
height of window (h)=1 m
Time to pass window =0.28 s
Let roof is at a distance of
above window
let t be the time to cover 
------1
--------2
subtract 1 & 2

![1=\frac{g}{2}\left [ \left ( 2t+0.28\right )\left ( 0.28\right )\right ]](https://tex.z-dn.net/?f=1%3D%5Cfrac%7Bg%7D%7B2%7D%5Cleft%20%5B%20%5Cleft%20%28%202t%2B0.28%5Cright%20%29%5Cleft%20%28%200.28%5Cright%20%29%5Cright%20%5D)
t=0.224 s

