7.for the following questions, use a periodic table and your atomic calculations to find the unknown information about each isotope: you have an neutrally charged isotope with 30 electrons and a mass number of 64. what element is it? cu: copper zn: zinc p: phosphorus se: selenium

You notice a very one-dimensional-thinking snail crawling along one rail of a railroad track. naturally, you remove it to a safer place. but before you do, you observe it as it moves from position xi = -92.9 cm to position xf = -64.9 cm along the rail, as measured from a point where one rail abuts the next. what is the snail\'s displacement δx in centimeters?

Which of the following are appropriate acceleration units?

Select the correct answer. what does the process of natural selection involve?