Answer:
this description is valid for mediadle displacement, bone is an acceptable description
Explanation:
The description of a person's position must be done with a position vector. These vectors must have magnitude, a given direction and a starting point.
In the description this has a starting point corner NO of pine and 675.
Each displacement occurs with respect to the previous one, indicating the magnitude of the displacement and its direction.
After analyzing this description is valid for mediadle displacement, bone is an acceptable description
Answer:
The direction is due south
Explanation:
From the question we are told that
The energy of the electron is ![E = 19.0keV = 19.0 *10^3 eV](https://tex.z-dn.net/?f=E%20%3D%2019.0keV%20%3D%2019.0%20%2A10%5E3%20eV)
The earths magnetic field is ![B = 42.3 \muT = 42.3 *10^{-6} T](https://tex.z-dn.net/?f=B%20%3D%2042.3%20%5CmuT%20%3D%2042.3%20%2A10%5E%7B-6%7D%20T)
Generally the force on the electron is perpendicular to the velocity of the elecrton and the magnetic field and this is mathematically reresented as
![\= F = q (\= v * \=B)](https://tex.z-dn.net/?f=%5C%3D%20F%20%3D%20q%20%28%5C%3D%20v%20%2A%20%5C%3DB%29)
On the first uploaded image is an illustration of the movement of the electron
Looking at the diagram we can see that in terms of direction the magnetic force is
![\= F =q(\=v * \= B)= -( -\r i * - \r k)](https://tex.z-dn.net/?f=%5C%3D%20F%20%20%3Dq%28%5C%3Dv%20%2A%20%5C%3D%20B%29%3D%20-%28%20-%5Cr%20i%20%2A%20-%20%5Cr%20k%29)
![= -(- (\r i * \r k))](https://tex.z-dn.net/?f=%3D%20-%28-%20%28%5Cr%20i%20%2A%20%5Cr%20k%29%29)
generally i cross k = -j
so the equation above becomes
![\= F = -(-(- \r j))](https://tex.z-dn.net/?f=%5C%3D%20F%20%3D%20-%28-%28-%20%5Cr%20j%29%29)
![= - \r j](https://tex.z-dn.net/?f=%3D%20-%20%5Cr%20j)
This show that the direction is towards the south
Answer:
v = 24 m/s, rightwards
Explanation:
Given that,
The mass of TBT explosive = 5 kg
It explodes into two pieces.
One of the pieces weighing 2.0 kg flies off to the left at 36 m/s. Let left be negative and right be positive.
The law of conservation of momentum holds here. Let v be the final speed of the remaining piece. So,
![5\times 0=2\times (-36)+3\times v\\\\-72=-3v\\\\v=24\ m/s](https://tex.z-dn.net/?f=5%5Ctimes%200%3D2%5Ctimes%20%28-36%29%2B3%5Ctimes%20v%5C%5C%5C%5C-72%3D-3v%5C%5C%5C%5Cv%3D24%5C%20m%2Fs)
So, the final speed of the remaining piece is 24 m/s and it is in the right direction.