a psychiatrist is interested in learning about how children interacting with each other during the school day the psychiatrist is typically interested in discovering the ways in which children behave when they think they are not being watched what research method would be best used to conduct this type of research why what ethical concerns might be an issue in this type of research already asked my question

The process in which the nucleus of an atom splits into two lighter atoms, releasing a large amount of energy is nuclear

Ateam of astronauts is on a mission to land on and explore a large asteroid. in addition to collecting samples and performing experiments, one of their tasks is to demonstrate the concept of the escape speed by throwing rocks straight up at various initial speeds. with what minimum initial speed vesc will the rocks need to be thrown in order for them never to "fall" back to the asteroid? assume that the asteroid is approximately spherical, with an average density p 3.84 x108 g/m3 and volume v 2.17 x 1012 m3 recall that the universal gravitational constant is g 6.67 x 10-11 n m2/kg2

Work = force × a. work b. energy c. distance d. momentum