Answer:
![\vec{C} = ( \ - 2.14 \ , \ 2.02 \ )](https://tex.z-dn.net/?f=%5Cvec%7BC%7D%20%3D%20%28%20%5C%20-%202.14%20%5C%20%2C%20%5C%202.02%20%5C%20%29)
Explanation:
The vector that point from point P1 to point P2 its found simply by taking the vector at which point P2 its located and subtracting the vector at which point P1 its located:
![\vec{C} = \vec{B} - \vec{A}](https://tex.z-dn.net/?f=%5Cvec%7BC%7D%20%3D%20%5Cvec%7BB%7D%20-%20%5Cvec%7BA%7D)
So:
![\vec{C} = ( \ 1.60 \ , \ 3.66 \ ) - ( \ 3.74 \ , \ 1.64 \ )](https://tex.z-dn.net/?f=%5Cvec%7BC%7D%20%3D%20%28%20%5C%201.60%20%5C%20%2C%20%5C%203.66%20%5C%20%29%20-%20%28%20%5C%203.74%20%5C%20%2C%20%5C%201.64%20%5C%20%29)
![\vec{C} = ( \ 1.60 \ - \ 3.74 \ , \ 3.66 \ - \ 1.64 \ )](https://tex.z-dn.net/?f=%5Cvec%7BC%7D%20%3D%20%28%20%5C%201.60%20%5C%20-%20%5C%203.74%20%5C%20%2C%20%5C%203.66%20%5C%20-%20%5C%201.64%20%5C%20%29)
![\vec{C} = ( \ - 2.14 \ , \ 2.02 \ )](https://tex.z-dn.net/?f=%5Cvec%7BC%7D%20%3D%20%28%20%5C%20-%202.14%20%5C%20%2C%20%5C%202.02%20%5C%20%29)
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your question here at brainly. Feel free to ask more questions.
<span>The
best and most correct answer among the choices provided by the question is B.
Reaches a max height of
8.25 feet after 0.63 seconds</span>
.
<span><span>
</span><span>Hope my answer would be a great help for you. </span> </span>
<span> </span>
1) Assuming an adult person has an average mass of m=80 kg, and assuming it takes about 30 seconds to climb 5 meters of stairs, the energy used by the person is
![E=mgh=(80 kg)(9.81 m/s^2)(5 m)=3924 J](https://tex.z-dn.net/?f=E%3Dmgh%3D%2880%20kg%29%289.81%20m%2Fs%5E2%29%285%20m%29%3D3924%20J)
So the power output is
![P= \frac{E}{t}= \frac{3924 J}{30 s} \sim 130 W](https://tex.z-dn.net/?f=P%3D%20%5Cfrac%7BE%7D%7Bt%7D%3D%20%5Cfrac%7B3924%20J%7D%7B30%20s%7D%20%5Csim%20130%20W%20%20)
And since the estimate we made is very rough, we can say that the power output of the person is comparable to the power output of the light bulb of 100 W.
2) Based on the results we found in the previous part of the exercise, since the power output of the person is comparable to the power output of 1 light bulb of 100 W, we can say that the person could have kept burning only one 100-W light bulb during the climb.
Answer:
The answer is 39.
Explanation:
The atomic number refers to the number of protons and the atomic mass is the sum of the protons and neutrons. So, you would just do 70 - 31 and that gets you 39.
The Answer is TRUE. Hope it helps