Which answer choice BEST explains why the author wrote this article? (A)
The author describes scientific research revealing the effects of social distancing to explain the value of
maintaining connections to combat stress.
(B)
The author explains what scientists have done to connect with their own families to provide ideas about
what readers can do while social distancing.
(C)
The author highlights researchers' concerns to suggest that avoiding and mistrusting others will remain
a habit long after the pandemic is over.
(D)
The author argues that people value their social and family connections to persuade readers to follow
social distancing rules during the pandemic

they fear for their lives

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

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~ use this opportunity to get more so you can thrive in the classroom