How can scientists use the composition of matter in today's universe to support the big bang theory, which describes a universe with 95% hydrogen and 5% helium in its infancy?​

Determine the maximum r-value of the polar equation r =3+3 cos 0

In what direction does an applied force move an object

Four objects each with charge +2.0×10−7c are located at the corners of a square whose sides are 2.0 m long. part a what quantities can be determined using this information? check all that apply. the electric force on a charged object placed at the center of the square. the mass of each object. the total electric potential energy of the system consisting of the four charged objects. part b find the electric force on a charged object placed at the center of the square.