Ana is planning to build an electrical circuit Before building it, she writes the statement, "f four batteries are connected to a light bulb, then the light bulb will burn longer than if two batteries are connected because more
battenes provide more energy"
Which best explains why Ana's statement is a hypothesis rather than a theory?
It is based on pror knowledge, but it has not been widely tested on her circuit.
It has been widely tested on her circuit, but it is not a factual statement
It is a factual statement, but it is not based on prior knowledge
It is a testable statement, but it cannot be replaced in the future.

Astudent is performing an experiment comparing sound and light waves. the student gathers the following data. what conclusion does the student most likely make based on this data? light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. all sound waves always have the same energy, so the temperature of the medium does not affect wave speed. light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o