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Which of the following are vectors?
1 answer:
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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
Answer:
The magnetic field that will allow the electron to go through the region without being deflected is .
Explanation:
Given that,
Velocity of the electron,
Electric field,
We need to find the magnetic field that will allow the electron to go through the region without being deflected. It can be calculated as :
Here,
So, the magnetic field that will allow the electron to go through the region without being deflected is .