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Answers by MyNameIsKhan

Answers by MyNameIsKhan
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Cobalt-60 has a half-life of 5.25 years. How much of the substance would remain after two half-lives?
answered May 4, 2021
4 votes
36.0k views
Which of the following structures is the most complex in organization? (biggest, most parts) organ cell organ system tissue
answered Jan 20, 2021
3 votes
123k views
How does a lytic infection differ from a lysogenic infection?
answered Dec 22, 2020
1 vote
69.1k views
Read the excerpt from act 2 of A Doll's House. Nora: What are you going to do? Helmer: [looking among his papers] Settle it. [Enter MAID.] Look here; take this letter and go downstairs with it at once.
answered Jul 9, 2020
1 vote
41.2k views
A piston with a volume of 847.1 mL is filled with 0.187 moles of a gas at 357.8 K and 305.7 mm Hg. The piston is then compressed by 228.1 mL and cooled to 205.2 K. What is the pressure (in atm) of the
answered May 16, 2020
1 vote
88.8k views
what will happen to the picture when a car with a blowing horn is approaching according to the Doppler effect​
answered Apr 3, 2020
2 votes
62.6k views
Which sentence from the passage best states its central argument? A. Since we all share life on this planet, they argue, no single person or institution has the right to destroy, waste, or use more than
answered Mar 8, 2020
2 votes
116k views
Kale is hiking 2,345 feet above sea level. The peak of the mountain he is climbing is 3,283 feet above sea level. What is the vertical distance between Kale and the mountain peak?
answered May 27, 2019
3 votes
173k views
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