A student makes a model of a galaxy by gluing glitter pieces on paper, as shown. Which galaxy is shown by the student's model, and why?
A. Elliptical galaxy the stars do not creates galaxy resembling disk
B. Irregular galaxy the stars do not crest a galaxy with a define shape
C. Spiral galaxy the stars are grouped together in the center of the galaxy
D. Spiral galaxy the stars are farther apart along the edges of the galaxy

Which statement best explains why an object weight less on mercury than it does on earth

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?

It is reasonable to assume that the bulk modulus of blood is about the same as that of water (2.2 gpa). as one goes deeper and deeper in the ocean, the pressure increases by 10000 pa for every meter below the surface. if a diver goes down 80.0 m in the ocean, by how much does each cubic centimeter of her blood change in volume? give the answer in cubic centimeters (actually one cubic centimeter equals one milliliter).