The table below compares three galaxies. 1 2 3
Type of galaxy Shape Force holding it together Type of matter present
Spiral Pinwheel Gravitational Stars, gas, and dust
Elliptical Round or oval Electrical Stars, gas, and dust
Irregular Undefined Gravitational Stars, gas, and dust

The information about galaxies is incorrect in
Column 1
Column 2
Column 1 and Column 3
Column 2 and Column 3

I think its B, let me know if i am wrong or right please

Astate of matter all that has define volume and can flow is a(n)

Glass is transparent to visibile light under normal conditions; however, at extremely high intensities, glass will absorb most of the light incident upon it. this works through a process known as multiphoton absorption. in this process, several photons are absorbed at the same time. if very intense light whose photons carry 2ev of energy is shined onto a material with a band gap of 4ev, that light can be absorbed through two-photon absorption, because two photons have the right amount of energy to bridge the band gap. what is the minimum number of photons of 800-nm light that are needed to equal or exceed the band gap of fused silica glass

The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.