The Milky Way galaxy is approximately 100,000 light-years across while the solar system is 1.9 light-years across. What is the scale ratio of the size
of the solar system to the galaxy?
A. 1:50,000
B. 1:100,000
C. 50,000:2

What is the conversion factor between kg/m^3 and g/m^3. express your experimental values for the densities in kg/m^3.

The a metal retainer that keeps the rolling elements evenly spaced. n a. seal n b. separator n c. bearing n d outer race

Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j