Galileo used his telescope to discover evidence for the sun-centered model of the solar system. this evidence included all odds the following except a. venus going through phases b. venus revolving around sun, not earth, c. the planets moving in ovals or elipses or d. moons revolving around jupiter?
Answers: 2
Physics, 21.06.2019 22:10
How would doubling the made of an object change the objects potential energy
Answers: 2
Physics, 22.06.2019 03:00
Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?
Answers: 3
Physics, 22.06.2019 06:40
Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?
Answers: 2
Physics, 22.06.2019 08:30
Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.
Answers: 3
Galileo used his telescope to discover evidence for the sun-centered model of the solar system. this...
Social Studies, 25.08.2019 05:10
Mathematics, 25.08.2019 05:10
Mathematics, 25.08.2019 05:10
Social Studies, 25.08.2019 05:10
Health, 25.08.2019 05:10
History, 25.08.2019 05:10
Biology, 25.08.2019 05:10
Biology, 25.08.2019 05:10
History, 25.08.2019 05:10