How does the author build understanding of the problem of police violence against black Americans? A by using recent data from The Washington Post and Mapping Police Violence B by comparing the public's responses to Black Lives Matter and Blue Lives Matter C by using data to illustrate that police officers are rarely held responsible for their crimes D by comparing the total number of white and black Americans charged with crimes last year

Q1 présentez le doc1 puis identifier les trois principaux éléments d'image.

Question 2 : Compléter le tableau à l ’aide des documents 2 e t 3 Composition du Front populaire, Moyen et année de l ’arrivée au pouvoir, Principales mesures, Objectifs.

Merci

Explanation:

q

answer: i chose a.

explanation:

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: