How much energy δ would be required to move the moon from its present orbit around earth to a location that is twice as far away? assume the moon’s orbit around earth is nearly circular and has a radius of 3.84×108 m. δ

Due in 40 explain in terms of frame of reference if you’re inside a moving train everything on the outside can seem to be moving

What instrument is used to measure liquid volume?

The space within which a test north pole experiences a force magnetic poles 2. a powerful stream of electrons flowing high above the earth in the ionosphere electrojet 3. a concept to explain the directional nature of a magnetic field field lines 4. coil of wire designed to produce a magnetic field by a current passing through its windings ionosphere 5. that region above the earth's atmosphere where particles exist in an ionized state magnetic field 6. the extremities of a magnet where the field lines tend to converge or concentrate aurora borealis 7. a phenomenon that occurs in the northern latitudes; the northern lights solenoid