It is 5.5 kmkm from your home to the physics lab. As part of your physical fitness program, you could run that distance at 10 km/hkm/h (which uses up energy at the rate of 700 WW), or you could walk it leisurely at 3.0 km/hkm/h (which uses energy at 290 WW). Part A Which choice would burn up more energy

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Ответ:

Goosebumpsestoybox

08.02.2021

Physics

The magnitude of the magnetic field near the center of the solenoid is 11.3 mT

Explanation:

No. of turns N = 300

Radius r = 0.040 m

Length of solenoid $L= 40 \times 10^{-2}$ m

Current I = 12 A

For finding the magnetic field near the center of the solenoid is given by,

$B = \frac{\mu _{o} NI }{L}$

Where $\mu _{o} = 4\pi \times 10^{-7}$

$B = \frac{4 \pi \times 10^{-7} \times 300 \times 12}{40 \times 10^{-2} }$

$B = 11.3 \times 10^{-3}$ T

B = 11.3 mT

Therefore, the magnitude of the magnetic field near the center of the solenoid is 11.3 mT

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