poohbaby7163
30.10.2019 •
Physics
The tape is now wound back into the drum at angular rate ω(t). with what velocity will the end of the tape move? (note that our drawing specifies that a positive derivative of x(t) implies motion away from the drum. be careful with your signs! the fact that the tape is being wound back into the drum implies that ω(t)< 0, and for the end of the tape to move closer to the drum, it must be the case that v(t)< 0.
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Ответ:
Earth's magnetic field protects the planet's atmosphere from the solar wind, which consists of charged particles released by the sun's magnetic field. The interaction between the sun and Earth's magnetic fields sometimes cause storms of explosive nature in the space near Earth.
Explanation: