ElectricPavlov

He is like one of the Founding Fathers...been here for years ,...... and answers a L-O-T of Q's....

   he's a math guru....and a Moderator for the website.

E_m * E_p  = k/4pi

1/2 E_m  * 2E_p  = k/4pi

so halving the momentum error  DOUBLES the position error   ....   a 100% increase

a particle's position must be at least Planck's constant divided by  ????   . Suppose the error in the measurement of the

But it is 6 answer

Sorry, you asked for how many MORE people    that would be 2 MORE peole

We will find the height ABOVE her 6ft height by 

tan45 = height / 21                     (tan = opp/ adj      adj would be the 21 feet distance   opp is the height)

21 tan 45 = height    = 21 ft 

   now add her 6ft height       27 feet tall

4 p  6 hr   =   24 p - h    per lawn

24 p- h / 4h = 6 p      6 people

See dragan answer below !   I saw the 'a'     and  got misdirected   I   gave the answer for   a-B    NOT the answer for AB

rises 4  for  run of 2    slope = 2

y intercept = 4  

 y = 2x+ 4

from 5th term to 32 term is  27 d

  9 + 27 d  = -84

               d = -3.1111111        or   (- 93/27)

*** edited ***

From 5th term to 23rd is 18 d

9 + 18 (-93/27) = - 53

I will asume the 'distance to the tower' is the horizontal distance

then 

tan 35 = height / 16000        you can take it from here...