(what you are changing)
Physics, 10.02.2021 08:50 hannahdrees0731
3. WHAT ARE THE VARIABLES OF THIS EXPERIMENT?
Independent Variable
(what you are changing)
Dependent
Variable (what you are
measuring)
Controlled
Variables (those factors
that need to be held the
same in each trial to
ensure a fair test)
I
List down the stens of how
Answers: 1
Physics, 21.06.2019 18:00
8. why do radio telescopes convert radio waves (analog signals) to electrical (digital) signals for analysis? (hint: what did the article say about the advantages of digital signals? )
Answers: 3
Physics, 22.06.2019 02:50
What is required for an electric charge to flow through a wire? zero resistance in the wire a balance of electric potential high resistance in the wire a difference in electric potential
Answers: 1
Physics, 22.06.2019 22:00
1. what is the relationship between wavelength and the penetrating power of an electromagnetic wave? a) the penetrating power has no relationship to the wavelength. b) the penetrating power increases as the wavelength increases. c) the penetrating power decreases as the wavelength increases. d) the penetrating power decreases as the wavelength decreases. 2. as ice melts and turns into water, the speed of sound through the material would most likely do what? justify your answer. a) the speed would not change because the material is always water. b) the speed of sound would increase because the density of water is less than that of ice. c) the speed of sound would increase because energy is added to ice in order to make it melt. d) the speed of sound would decrease because sound travels faster through solids than liquids. 3.which of these waves need a medium to travel through? a) sound b) x-rays c) infrared rays d) visible light
Answers: 3
3. WHAT ARE THE VARIABLES OF THIS EXPERIMENT?
Independent Variable
(what you are changing)
(what you are changing)
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