La densidad del metal disminuye a medida que se calienta . Piense en el agua . Cuando hace frío , se convierte en hielo , lo cual es muy densa . Cuando hace calor , se evapora en gas , que no es denso.
<span>Espero que esto no es confuso , yo no soy un hablante nativo de español .</span>
On the moon you would weigh around 19 pounds!
Answer:
The required radial distance from the center of the toroid is -
<u>r = 4.34 cm</u>
Explanation:
We know that magnetic field inside a solenoid is given by -
B = μni
where 'μ' is the magnetic permeability , 'n' is the number of turns per unit length , 'i' is the current passing through solenoid.
given n = 550 turns/meter
We know that magnetic field inside a toroid is -
B = μ×
×i [Current is same in both the devices] , where 'N' is the total number of turns in the toroid and 'r' is the radial distance from the center of the toroid.
Given N = 150.
Equating the two magnetic fields , we get -
μni = μ×
×i
∴ ![r = \frac{N}{2n\pi }](https://tex.z-dn.net/?f=r%20%3D%20%5Cfrac%7BN%7D%7B2n%5Cpi%20%7D)
Substituting the values we get -
r = 0.0434 m = 4.34 cm