Please match the description to appropriate galaxy type. Answers may be used more than once or not at all.

1.The small galaxy NGC 1569 has such impressive star formation and weak gravity that the stellar winds and supernovae shockwaves are blowing gas out of the galaxy entirely. This galaxy is forming some of the largest star clusters ever observed, probably what globular clusters looked like when they were being formed.

2.NGC 4565 is also called "The Needle". It has multiple populations of stars, young and old, including a group of stars, gas, and dust that orbit in the same plane and the same direction.

3.Arp 194 shows two galaxies connected by a fountain of millions of newborn blue stars, gas, and dust that stretches over 100,000 light-years (nicknamed the "fountain of youth").

4.Galaxy ESO 325-G004 has over 1,000 identified globular clusters bound to it (the Milky Way probably only has 200). The galaxy has so much mass that it is gravitationally lensing more distant galaxies, which appear as arcs around the galaxy.

5.Halton Arp's Atlas of weird looking galaxies includes Arp 272. This image spans 150 thousand light-years, so these three galaxies are right next to each other and starting to warp their shapes.

6.This is a view of our Milky Way galaxy if you could remove the Earth and the Sun. It shows the dark dust lanes, where thick clouds of gas and dust block our view of the rest of the galaxy. You can also see a large concentration of older, yellow and reddish stars in a large sphere at the center.

A. globular galaxy
B. open galaxy
C. dwarf irregular galaxy
D. spiral galaxy
E. merging irregular galaxy
F. ecliptic galaxy
G. elliptical galaxy
H. whirlpool galaxy

1)dwarf irregular galaxy

2)spiral galaxy

3)merging irregular galaxy

4)elliptical galaxy

5)merging irregular galaxy

6) Spiral galaxy

Explanation:

globular cluster is group of stars that is curve trajectory of a galactic core,globular cluster are spherical in shape and they are formed in the Halo of galaxy, they have very high stellar densities in their centre.

dwarf irregular galaxy is also called di-galaxy, they are galaxy with high level of gas and low metallicity, One of the common example of this galaxy is the large Magellanic clouds, dwarf irregular galaxy can be sighted in the southern hemisphere.

Spiral galaxy which is also known as sipral nebula is one that has a central nucleos with an extend curved arm, which rotate around the center axis.spiral galaxy exhibit higher luminousity.

An irregular galaxy is one with no specific shape compare to other galaxy such as Spiral galaxy

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:

iron would move it is magnetic there is a mag field around the current in the wire