Answer:
the answer is C
Explanation:
The car, first is at rest and if you don't accelerate it won't move. When to hit the gas it will accelerate from rest
Responder:
35,2 ohm.
Explicación:
Dado:
La resistencia específica del conductor es,
La longitud del conductor es,
El área de la sección transversal del conductor es,
Sabemos que la resistencia de un conductor es directamente proporcional a su longitud e inversamente proporcional al área de la sección transversal.
Por lo tanto, la resistencia se puede expresar como:
![R=\frac{\rho\times l}{A}](https://tex.z-dn.net/?f=R%3D%5Cfrac%7B%5Crho%5Ctimes%20l%7D%7BA%7D)
Ahora, conecte los valores dados y resuelva para 'R'. Esto da,
![R=\frac{1.6\times 10^{-6}\ ohm\cdot m\times 110\ m}{5\times 10^{-6}\ m^2}\\\\R=35.2\ ohm](https://tex.z-dn.net/?f=R%3D%5Cfrac%7B1.6%5Ctimes%2010%5E%7B-6%7D%5C%20ohm%5Ccdot%20m%5Ctimes%20110%5C%20m%7D%7B5%5Ctimes%2010%5E%7B-6%7D%5C%20m%5E2%7D%5C%5C%5C%5CR%3D35.2%5C%20ohm)
Por lo tanto, la resistencia del conductor es de 35,2 ohm.
Electromagnetic Waves:
Radio waves, television waves, and microwaves.
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.