Which statements accurately describe Earth's magnetic field? Check all that apply.
The magnetic field lines flow from Earth's geographic South Pole to Earth's geographic North Pole.
The magnetic field is created by magnetic rocks on the surface.
The magnetic poles line up exactly with Earth's geographic poles.
The magnetic field is generated in Earth's core
The magnetic field is similar to the magnetic field of a bar magnet.

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot