Me fast giving lots of points. if 20 waves of water pass you in 10.0s and the waves are 2.0 m long how fast are they moving? a.)8.0m/s b.)1.0m/s c.)4.0m/s d.)2.0m/s

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

Erosion of the beach is normally a slow process. however, in certain situations, large chunks of shore may wash out to sea. what could cause this to happen?

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?