Answer:
» (a)
Explanation:
Velocity is the rate of change in displacement.
![{ \rm{velocity = \frac{ \triangle displacement}{time} }} \\](https://tex.z-dn.net/?f=%7B%20%5Crm%7Bvelocity%20%3D%20%20%5Cfrac%7B%20%5Ctriangle%20displacement%7D%7Btime%7D%20%7D%7D%20%5C%5C%20)
The change from one position to another is displacement or distance between the points.
![= { \rm{ \frac{22000}{200} }} \\ \\ = { \tt{110 \: m {s}^{ - 1} }}](https://tex.z-dn.net/?f=%20%3D%20%7B%20%5Crm%7B%20%5Cfrac%7B22000%7D%7B200%7D%20%7D%7D%20%5C%5C%20%20%5C%5C%20%20%3D%20%7B%20%5Ctt%7B110%20%5C%3A%20m%20%7Bs%7D%5E%7B%20-%201%7D%20%7D%7D)
Answer:
The number of turns, N = 1750
Explanation:
It is given that,
The inner radius of a toroid, r = 12 cm
Outer radius, r' = 15 cm
The magnetic field at points within the coils 14 cm from its center is, ![B=3.75\ mT=3.75\times 10^{-3}\ T](https://tex.z-dn.net/?f=B%3D3.75%5C%20mT%3D3.75%5Ctimes%2010%5E%7B-3%7D%5C%20T)
R = 14 cm = 0.14 m
Current, I = 1.5 A
The formula for the magnetic field at some distance from its center is given by :
![B=\dfrac{\mu_o NI}{2\pi R}](https://tex.z-dn.net/?f=B%3D%5Cdfrac%7B%5Cmu_o%20NI%7D%7B2%5Cpi%20R%7D)
![N=\dfrac{2\pi R B}{\mu_o I}](https://tex.z-dn.net/?f=N%3D%5Cdfrac%7B2%5Cpi%20R%20B%7D%7B%5Cmu_o%20I%7D)
![N=\dfrac{2\pi \times 0.14\times 3.75\times 10^{-3}}{4\pi \times 10^{-7}\times 1.5}](https://tex.z-dn.net/?f=N%3D%5Cdfrac%7B2%5Cpi%20%5Ctimes%200.14%5Ctimes%203.75%5Ctimes%2010%5E%7B-3%7D%7D%7B4%5Cpi%20%5Ctimes%2010%5E%7B-7%7D%5Ctimes%201.5%7D)
N = 1750
So, the number of turns must have in a toroidal solenoid is 1750. Hence, this is the required solution.
Answer:
Where do I answer them???
hope this helps
Answer:
If a person is pushing a desk across the room, then there is an applied force acting upon the object. The applied force is the force exerted on the desk by the person.
Answer:
3.125J
Explanation:
K.E.= 1/2(mass)(velocity)^2
K.E.=1/2(0.25)(5)^2=3.125