Physics, 20.04.2020 19:28 daniellopez18
The three cubes represent three stages in a computer simulation of the formation of protogalactic clouds; they represent a region about 500 million light-years across. Which of the following statements about this model is true?
1. The gas in the third frame looks very dis-organized, but the model indicates that all this gas soon became the spiral arms of a large spiral galaxy.
2. Although the gas in the three frames looks fairly stationary, the model assumes that the entire blob of gas must have been rotating rapidly.
3. Although the model shows only visible gas, it assumes that there were supermassive black holes randomly distributed throughout the universe.
4. Although the gas looks uniform in the first frame, the model assumes there were small regions with slightly higher densities than other regions.
Answers: 3
Physics, 21.06.2019 21:50
Adiver in midair has an angular velocity of 6.0 rad/s and a moment of inertia of 1.2 kg·m2. he then pulls is arms and legs into a tuck position and his angular velocity increases to 12 rad/s. the net external torque acting on the diver is zero. what is his moment of inertia in the tuck position?
Answers: 1
Physics, 22.06.2019 19:40
Which of the following is a characteristic shared by both electron and light microscopes? a. they both employ the use of objective lenses. b. both microscopes require an internal camera to visualize the specimen. c. both microscopes have a resolving power of 0.01 nm. d. they both utilize white light to magnify the specimen.
Answers: 2
Physics, 22.06.2019 22:30
Asailboat is traveling to the right when a gust of wind causes the boat to accelerate leftward at 2.5m/s2 for 4s. after the wind stops, the sailboat is traveling to the left with a velocity of 3.0m/s.assuming the acceleration from the wind is constant, what was the initial velocity of the sailboat before the gust of wind? answer using a coordinate system where rightward is positive.
Answers: 1
The three cubes represent three stages in a computer simulation of the formation of protogalactic cl...
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