Physics, 22.08.2019 16:30 danielahalesp87vj0
To understand the interplay of observations and models you must first be able to distinguish between things that we observe and things that we infer from models. consider the following statements about the sun. classify each statement as an observation or as an inference based on the current, accepted model for the sun.
observations
the photosphere is made mostly of hydrogen and helium
the photosphere emits mostly visible light.
the corona is hotter than the photosphere.
the sun emits neutrinos.
the sun generates energy by fusing hydrogen into helium in its core.
the core temperature is 10 million k
the convection zone is cooler than the radiation zone.
the composition of the photosphere is the same as that of the gas cloud that gave birth to our solar system.
Answers: 1
Physics, 23.06.2019 06:30
What is a possible explanation for a set of facts that can be tested by further investigations called
Answers: 3
Physics, 23.06.2019 08:30
Acertain half-reaction has a standard reduction potential e_red^0 = -0.94 v. an engineer proposes using this half-reaction at the cathode of a galvanic cell that e must provide at least 1.00 v of electrical power. the cell will operate under standard conditions. a. is there a minimum standard reduction potential that the half-reaction used at the anode of this cell can have? b. is there a maximum standard reduction potential that the half-reaction used at the anode of this cell can have?
Answers: 1
Physics, 23.06.2019 11:00
Mr. polifka does a demonstration in science class. he holds an unlit match six inches above a candle flame. after a while, the match bursts into flame.
Answers: 1
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