Anna holds a 1.5 kg air rifle loosely and fires a bullet of mass 1.05 g. The muzzle velocity of the bullet is 165 m/s (the gun and the bullet are the system). To the right is the positive direction. What is the total final momentum of the system?

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

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

Sodium chloride, nacl, is formed when a sodium atom transfers its electron to a chlorine atom. the difference in charge between the two atoms creates a(n) attraction that bonds them together.