I NEED HELP IMMEDIATELY!! ON THE QUIZ NOW How are Van Allen belts formed?
High-energy particles from the Sun get trapped in Earth’s magnetic field.
Metals in Earth’s core sink and rise, producing a circular movement of the metals.
Particles in solar wind travel along lines of Earth’s magnetic field and collide with gas atoms.
Material from the surface of the Sun erupts and forms a loop due to the Sun’s magnetic field.

Two nitro no2 groups are chemically bonded to a patch of surface. they can't move to another location on the surface, but they can rotate (see sketch at right). it turns out that the amount of rotational kinetic energy each no2 group can have is required to be a multiple of ε, where =ε×1.010−24 j. in other words, each no2 group could have ε of rotational kinetic energy, or 2ε, or 3ε, and so forth — but it cannot have just any old amount of rotational kinetic energy. suppose the total rotational kinetic energy in this system is initially known to be 32ε. then, some heat is removed from the system, and the total rotational kinetic energy falls to 18ε. calculate the change in entropy. round your answer to 3 significant digits, and be sure it has the correct unit symbol.

Liv sheldon given the balanced equation for an organic reaction: c2h2 + 2cl2 → c2h2cl4 this reaction is best classified as *

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as