<span>Polymers are small molecular units joined together in large molecules.
hope this helps!</span>
this can be solve using the formala of free fall
t = sqrt( 2y/ g)
where t is the time of fall
y is the height
g is the acceleration due to gravity
48.4 s = sqrt (2 (1.10e+02 m)/ g)
G = 0.0930 m/s2
The velocity at impact
V = sqrt(2gy)
= sqrt( 2 ( 0.0930 m/s2)( 1.10e+02 m)
V = 4.523 m/s
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Answer:
5.9*10^{-4}m
Explanation:
to find the uncertainty of the displacement it is necessary to compute the uncertainty for the angular frequency:
then, you can calculate the uncertainty in angular displacement:
finally, by using:
Answer:
speed in still air is 42 mph
Explanation:
given data
tail wind speed = 14 mph
time t1 = 5 min = 5/60 hr = 1/12 hr
return time t2 = 10 min = 10 /60 hr = 1/6 hr
to find out
how fast they fly
solution
we consider here speed in still air is x
then
speed in wind will be = x + 14
and against wind speed = x - 14
so
distance = speed × time .................1
so in wind distance = ( x + 14 ) × 1/12 ...................2
and against wind distance = ( x - 14 ) × 1/6 ..................3
so from equation 2 and 3
( x + 14 ) × 1/12 = ( x - 14 ) × 1/6
x = 42
so speed in still air is 42 mph
