Answer: a) electromagnetic waves
Explanation:
An electromagnetic wave begins when an electrically charged particle vibrates. This causes a vibrating electric field, which in turn creates a vibrating magnetic field. The two vibrating fields together form an electromagnetic wave.
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Answer:
The radius of coil 2 = 2.7 cm
Explanation:
The number of coils = 2
It is given that both carry equal current and rotates in the magnetic field.
The given radius of coil 1 = 4.0 cm
Coil 1 rotates = 0.21 T field
Coil 2 rotates = 0.45 T filed.
The radius of coil 2 need to be calculated.
Torque action on dipole is given by
here T1 = T2
![r1^{2} \times B1 = r2^{2} \times B2 \\r2^{2} = 0.04 \times 0.04 \times \frac{0.21}{0.45} \\r2 = 0.027m \ or \ 2.7 cm \\](https://tex.z-dn.net/?f=r1%5E%7B2%7D%20%5Ctimes%20%20B1%20%3D%20r2%5E%7B2%7D%20%5Ctimes%20B2%20%5C%5Cr2%5E%7B2%7D%20%3D%200.04%20%5Ctimes%200.04%20%5Ctimes%20%5Cfrac%7B0.21%7D%7B0.45%7D%20%5C%5Cr2%20%3D%200.027m%20%20%20%5C%20or%20%5C%202.7%20cm%20%5C%5C)
Answer:
Its simple! B The ball accelerates upward!♡♡
Thank you for posting your question here at brainly. But your question seems incomplete. I will assume you based the situation below:
<span>An electrons moves at 2.0x10^6 m/s through a region in which there is a magnetic field of unspecified direction and magnitude 7.4x10^-2 T.
The </span> largest possible magnitude of the acceleration of the electron due to the magnetic field is <span>= 2.6 × 10 ¹⁶ m / s ²</span>
Number 4 is c , number 5 is a , number 6 is d and 7 is a