Answers:
a)The balloon is 68 m away of the radar station
b) The direction of the balloon is towards the radar station
Explanation:
We can solve this problem with the Doppler shift equation:
(1)
Where:
is the actual frequency of the sound wave
is the "observed" frequency
is the velocity of sound
is the velocity of the observer, which is stationary
is the velocity of the source, which is the balloon
Isolating
:
(2)
(3)
(4) This is the velocity of the balloon, note the negative sign indicates the direction of motion of the balloon: It is moving towards the radar station.
Now that we have the velocity of the balloon (hence its speed, the positive value) and the time (
) given as data, we can find the distance:
(5)
(6)
Finally:
(8) This is the distance of the balloon from the radar station
From the balanced reaction, we are given that 1418 kJ of
heat is released for every 2 moles of nitromethane (CH3NO2) reacted.
So first calculate the moles of CH3NO2:
moles CH3NO2 = 5560 g / (61.04 g/mol)
moles CH3NO2 = 91.1 mol
So total heat released is:
total heat = (-1418 kJ / 2mol) * 91.1 mol
<span>total heat = -129,162.52 kJ = -129.16 MJ</span>
<em>Answer</em><em>:</em><em> </em> The complementary relationship indicated by the Newton's second law...
For a given applied force the acceleration of the trolley is inversely proportional to it's mass.
Answer:
A. Linkedln
Explanation:
In addition to stand-alone discussion boards, all of these sites include discussion boards as part of their features except:
A. Linkedln
All other application in addition to stand-alone Google, Yahoo, Microsoft, etc. include discussion board.
he weights 187.393 pounds