TOPIC You’re talking about good and bad habits. You should say:
1/ Three good habits
2/ Three bad habits
3/ How you change your habits
4/ How good habits can help you
* Language focus:
- Present Perfect
- Past Simple
* Remember to
- introduce yourself before starting the talk.
- start and end the talk properly.

what gradee ya in so we can do it im 8th grade

                                                        -hannahsgachagal

                                                          (p.s thats my real you tube lol)

for the comment!

i believe the answer is d

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: