Radius SurfaceBrightness (parsecs) (pc cm 6) 0.012 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 6.0 7.0 8.0 9.0 10.0 12.0 7.1 5.3 4.7 4.5 3.6 3.2 2.8 2.4 2.3 2.1 1.7 1.3 0.8 0,6 9. 1. If it were impossible to see a ring nebula with a surface brightness fainter than 1.6 pc cm6, how big would the nebula be when it becomes invisible? 625 parsecs 10. 2. What would the surface brightness of a ring nebula be if it has a radius of 3.25 parsecs? pc cm 6

the answer would be a

0.55x745.7j and a calculator

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is