Each element (as seen in the picture) has it's own emission spectrum. you may call it a "fingerprint" that is unique to each
element
explain why hydrogen and oxygen have a different number of line spectra.

i believe the answer would be:

d. violin, clarinet, french horn, and tuba

energy can be converted from one form to another, but it cannot be created or destroyed in ordinary chemical or physical means. do not understand what you are asking but hope this

explanation:

to push or pull an object in a certain direction is known as force. a force in moving an object from one place to another.

force depends on the mass of an object. so, more is the mass of an object more will be the force required to move the object.

thus, we can conclude that the use of force to move an object is push or pull.