Which of the following best describes the gas trapped in a sealed balloon?
a) the particles move slowly.
b) the particles do not often collide with one another.
c) the movement of the gas particles keeps the balloon inflated.
d) the particles form a large percentage of the balloon's total volume.

An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. suppose the magnetic field is strong enough to allow the particles to circle in the field. note: you'll need to look up the masses for an electron and proton. 1) what is the ratio of the radii of their circular paths rp/re?

This is the substance(s) formed in a chemical reaction.

Marvin records scientific data about lake superior. for which property has marvin forgotten to use an si unit of measurement? shore length high temperature low temperature annual precipitation