How is dark energy related to the theory of the Big Bang? (1 point)

It seeded the formation of galaxies and star clusters.

It causes the spinning of galaxies.

It causes the universe to expand.

It causes the expansion of the universe to accelerate.

It causes space to expand.

Gravity and Dark energy have been in a interstellar tug of war since the universe's inception. Gravity tries to pull things together, while Dark energy pushes things apart. It may remain this easy until one of these forces dominate.

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: