Identify the statement that is true about the Big Bang. a. It is the explanation for how our Solar System developed. b. It began with all matter and energy concentrated in an infinitesimally small point. c. It occurred less than 13 million years ago. d. The Big Bang theory states that at the instant of explosion, atoms of all major elements came into existence.

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?

Acharge of 8.4x10^-4 c moves at an angle of 35 degrees to a magnetic field that has a field strength of 6.7x10^-3 t. if the magnetic force is 3.5 x10 ^-2 n, how fast is the charge moving?

The material that keeps its new shape after it is stretched is called?