The first, fourth and sixth options. A person walks up a flight of stairs, wind lifts a balloon into the air, and a weightlifter holds a barbell straight overhead.
Complete Question
A proton is located at <3 x 10^{-10}, -5*10^{-10} , -5*10^{-10}> m. What is r, the vector from the origin to the location of the proton
Answer:
The vector position is ![\=r=](https://tex.z-dn.net/?f=%5C%3Dr%3D%3C3%2A10%5E%7B-10%7Di-5%2A10%5E%7B-10%7Dj%20-5%2A10%5E%7B-10%7Dk%3E)
Explanation:
From the question we are told that
The position of the proton is
Generally the vector location of the proton is mathematically represented as
![\= r =](https://tex.z-dn.net/?f=%5C%3D%20r%20%3D%20%3Cxi%20%20%2B%20yj%20%20%2B%20zk%3E)
So substituting values
![\=r=](https://tex.z-dn.net/?f=%5C%3Dr%3D%3C3%2A10%5E%7B-10%7Di-5%2A10%5E%7B-10%7Dj%20-5%2A10%5E%7B-10%7Dk%3E)
Answer:
a) 141.6m
b) 8.4m/s
Explanation:
a) to find the total displacement you use the following formula for each trajectory. Next you sum the results:
![x_1=v_1t_1=(12m/s)(9s)=108m\\\\x_2=v_2t_2=(4.8m/s)(7s)=33.6m\\\\x_T=x_1+x_2=108m+33.6m=141.6m](https://tex.z-dn.net/?f=x_1%3Dv_1t_1%3D%2812m%2Fs%29%289s%29%3D108m%5C%5C%5C%5Cx_2%3Dv_2t_2%3D%284.8m%2Fs%29%287s%29%3D33.6m%5C%5C%5C%5Cx_T%3Dx_1%2Bx_2%3D108m%2B33.6m%3D141.6m)
hence, the total distance is 141.6m
b) the mean velocity of the total trajectory is given by:
![v_m=\frac{v_1+v_2}{2}=\frac{12m/s+4.8m/s}{2}=8.4\frac{m}{s}](https://tex.z-dn.net/?f=v_m%3D%5Cfrac%7Bv_1%2Bv_2%7D%7B2%7D%3D%5Cfrac%7B12m%2Fs%2B4.8m%2Fs%7D%7B2%7D%3D8.4%5Cfrac%7Bm%7D%7Bs%7D)
hence, the mean velocity is 8.4 m/s
Answer:
Matter is anything that has mass and occupies space. The flame itself is a mixture of gases (vaporized fuel, oxygen, carbon dioxide, carbon monoxide, water vapor, and many other things) and so is matter. <em><u>The light produced by the flame is energy, not matter.</u></em>
<em><u></u></em>
John carry the heaviest load.
<h3>How to find out who is carrying the heavy load?</h3>
Write down given data from questions:
Board=510cm X 510mm.
Cylinder head with dimensions=43cm X 250mm.
Cylinder lies across the board 210cm from john.
Find out: Who is carry the heaviest load?
Calculation:
We assume that mass of cylinder head = x kg
Then weight=x x 9*81
W=9.81x Newton.
Weight per unit length= Weight/Total leanth
Weight per unit length= 9.81x/43
(w/l)=0.23x N/cm
From equation contition: ![(F_{J} +F_{T} =9.81x n)](https://tex.z-dn.net/?f=%28F_%7BJ%7D%20%2BF_%7BT%7D%20%3D9.81x%20n%29)
(210+21.5)
![F_{T} (510)=9.81 x (231.5)](https://tex.z-dn.net/?f=F_%7BT%7D%20%28510%29%3D9.81%20x%20%28231.5%29)
![F_{T} =4.452x N.](https://tex.z-dn.net/?f=F_%7BT%7D%20%3D4.452x%20N.)
![F_{J} =9.81x-4.452x](https://tex.z-dn.net/?f=F_%7BJ%7D%20%3D9.81x-4.452x)
![F_{J} =5.358 xN](https://tex.z-dn.net/?f=F_%7BJ%7D%20%3D5.358%20xN)
Therefore ![F_{J} \geq F_{T}](https://tex.z-dn.net/?f=F_%7BJ%7D%20%5Cgeq%20F_%7BT%7D)
To learn more about mass per unit length, refer to:
brainly.com/question/24180692
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