Currently, the president of Africa is Jacob Gedleyihlekisa Zuma.
Answer:
a) It takes 6,37 s b) The Velocity is -59,43 m/s
Explanation:
The initial variables of the balloon are:
Xo = 0 m
Vo = 3 m/s
After one minute the situation is the following:
t= 60 s
X1 = Xo + Vo*t
X1= 0 m + 3 m/s * 60s
X1= 180m
So when the bag falls, its initial variables are the following:
Xo = 180m
X1 = 0m
Vo = 3 m/s
V1= ?
a= -9,8 m/s2
The ecuation of movement for this situation is:
X = Vo*t + 1/2 a*
So:
-180m = 3m/s*t+ 1/2*-9,8 m/s2 *
To solve this we have
a=-9,8/2
b=3
c=180
The formula is:
Replacing, we get to 2 solutions, where only the positive one is valid because we are talking about time.
<u>So the answer a) is t= 6,37 s</u>
With that answer we can find the question b), with the following movement formula.
Vf = Vo + at
Vf = +3 m/s + (-) 9,8 m/s2 *6,37s
b) Vf = -59,43 m/s
Any kind of frequency, including the angular kind, is closely involved with
time. Still, for some unknown reason,you've given us no time information
whatsoever ... a peculiar decision on your part, since we can be sure that
it's right there, inexorably intertwined with the part of the question that you
DID copy and share with us.
Furthermore and moreover, for one with no prior experience with simple
harmonic motion, the many symbols in this question such as ' d ', ' a ',
' << ', ' d₂ ', and ' a₂ ' would be of no help at all to guide him toward a
solution. On the contrary, he would conclude that the question itself
had been posted by some alien life form.
To sum up: Come back and post the drawing that goes along with the
question, make sure you have presented all of the information that the
question includes, and then we'll talk.
Answer:
A.without a long antenna, 're signal will not travel far
Answer:
Mia is correct, but did not show a lot of work.
Explanation:
Mia must explain her answer and give reasoning by using what knowledge she has on the subject.
