Your friend comments that the bright star must give off much more light than the dimmer star. is he necessarily right?

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

(01.02 mc) nicole pushes her bike up a hill. overhead, the sun exerts a gravitational force on earth. which statement is true about the bike and earth? they both experience contact forces. they both experience non-contact forces. the bike experiences a non-contact force and earth experiences a contact force. the bike experiences a contact force and earth experiences a non-contact force. they both experience non-contact forces.

What energy transformations occur each time the skateboarder rolls up the ramp?