Physics Homework Aid
Physics holds significant importance among the natural sciences, elucidating life's wonders and ranking among the most challenging subjects to master.
QuestionAI is a rich and user-friendly physics problem solver for novice physicists, enabling exploration of atomic properties and interactions, alongside molecular trajectories under various forces. Furthermore, you can delve into the mysteries concealed amidst galaxies with fellow physics enthusiasts. Boldly pose your conjectures and queries to the AI, and authoritative answers will readily emerge.
- How did Johannes Kepler's astronomical discovery differ from the theories of Aristotle and Copernicus. He contradicted their theories regarding the moon's phases. He stated that the planetary orbits were elliptical. He promoted the finding that the earth-sun distance remains constant. He stated that the planetary orbits were circular.
- Question 2 (1 point) A bicycle has a momentum of 24kgcdot m/s What momentum would the bicycle have if it had the same mass and was moving with twice the speed? kgcdot m/s Blank 1: square
- You and a friend are examining a sample from an ancient civilization.In this point sample, 2.5g of the original 10g of carbon-14 remain. Since C-14 has a half-life of 5730 years , your friend says this sample is 22,920 years old, since only 1/4 of the original sample remains it must have gone though 4 half lives. What error is your friend making? Your friend does not recognize that half-life is exponential decay, and that two half- lives have elapsed and thus the sample is actually 11460 years old Your friend has incorrectly counted half lives, and the sample is only 5730 years old. Your friend is wrong because radioactive carbon 14 will take half as long to decay with each half life and two half-lives have passed, so the sample is 8595 years old. Your friend has not made an error because only 1/4 of the sample remains, so 4 half- lives have passed.
- 15. Sometimes you can see the moon during the daytime. The moon looks the same size as the sun, but the moon is 1/400 the size of the sun. Which of these best shows the size of the moon relative to the sun? (2006 test - question 40)
- Phil Spector frequently employed doubling in his recordings Select one: True False