Answer:
Tstring = 343.35 [N].
Explanation:
Since the block is in equilibrium, we can say that the sum of the forces on the Y-axis or vertical is equal to zero.
∑Fy = 0

where:
Tstring = tension of the string [N]
W = weight of the block [N]
And the weight can be calculated multiplying the mass of the block by the gravity acceleration.
Now replacing:
![T_{string}=m*g\\T_{string}=35*9.81\\T_{string}=343.35[N]](https://tex.z-dn.net/?f=T_%7Bstring%7D%3Dm%2Ag%5C%5CT_%7Bstring%7D%3D35%2A9.81%5C%5CT_%7Bstring%7D%3D343.35%5BN%5D)
False.
The force of friction is always the direction opposite of the object's movement.
Explanation:
It is given that,
Kinetic energy of the electron, 
Let the east direction is +x direction, north direction is +y direction and vertical direction is +z direction.
The magnetic field in north direction, 
The magnetic field in west direction, 
The magnetic field in vertical direction, 
Magnetic field, 
Firstly calculating the velocity of the electron using the kinetic energy formulas as :



(as it is moving from west to east)
The force acting on the charged particle in the magnetic field is given by :


Since, 
And, 
![F=1.6\times 10^{-19}\times [1178 k-2864.20j]](https://tex.z-dn.net/?f=F%3D1.6%5Ctimes%2010%5E%7B-19%7D%5Ctimes%20%5B1178%20k-2864.20j%5D)


(b) Let a is the acceleration of the electron. It can be calculated as :



Hence, this is the required solution.
7.5 I think because it can not be 9 because it’s not close to 50
If you're referring to the different colors that usually occur at the tip of missles, rockets and some other aircraft, it either a) signifies the end of a particular plate of metal, fabricated specifically to be for the nose. Sometimes these can even be a different alloy or metal all together. or b) this shows where the curved surface begins, so in the case of damage or imperfections due to wear, they can be repaired and measured more easily. The shape of the nose is extremely important for smooth flight, and a dent or bump formed on it can make the aircraft unstable. If you can measure from where the curve starts by the difference in color, it makes repairing or re-fabricating the part much easier. Many of these curves aren't as simple as they appear.