JFK’s speech What is the author's main purpose in writing the speech?

A.)to tell the audience about the economic benefits of the United States space program

B.)to offer the audience a explanation of the reasons for accelerating the United States
space program

C.)to inform the audience of the number op jobs created by the expansion of the United
Space space program

D.)to update the audience with information about problems in the United States space
program

3rd person, because the narrator is out of the story but explains the feeling of the main character

c.to compare several aspects of the tragedy to other worldwide tragedies

answer: hjnh

explanation:

hhjjk

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: