Please help, is an electric lamp a luminous object?​

Which units can be used to measure length or distance? check all that apply. gram meter kilometer liter inch

What are similarities and differences between refraction, reflection, diffraction and absorption?

Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. the work done on object 1 is 900 j. after the force has pulled each object, object 1 moves twice as fast as object 2. how much work is done on object 2?