When a bullet is fired from a gun, what is true about the momentum? The bullet has more momentum than the gun, so momentum is not conserved.

The bullet and gun have equal momenta in opposite directions, so the system's momentum is conserved.

The gun has more momentum than the bullet, so the momentum is not conserved.

The bullet and the gun have equal momenta in the same direction, so the system's momentum is conserved.

There is a theory that indicates that dinosaurs became extinct when about 65 million years ago, a large asteroid hit the earth surface. dust caused by this collision blocked the sunlight reaching the earth's surface and many forms of life became extinct due to the cold. fearing this threat, how large the radius of an asteroid should you be looking for if the dangerous asteroid size is approximately the same as the one that killed the dinosaurs? available data suggests that about 18% of that asteroid's mass ended up as a dust spread evenly over earth after eventually settling out of the upper atmosphere. about 0.0180 g/cm^2 of dust, which is chemically different than the earth's rock, covered the earth's surface. typical asteroids have a density of about 1.9 g/cm^3. now that we know the size of the asteroid, how much energy was released during impact, assuming all of it was just the kinetic energy of the asteroid right before the impact?

Match these items. 1. coulombs __force 2. ohms __emf 3. centimeters __resistance 4. newtons __charge 5. volts __length

Frequency of electromagnetic waves that a radio station is assigned is called