Which statements describe the death of stars? Check all that apply.
o Astar's final stages of life depend on its mass.
Stars die when they run out of fuel.
o When a star starts to die, its core expands.
The outer portion of the star contracts.
All stars become black holes when they die.

All the simple machines make work easier to do by changing the or of a force. a. size; type b. work; type c. size; direction d. type; direction

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.