1. What is Physical Science? 2. What is the definition of Hypothesis?
3. Which does a scientist believe more, a
theory, or a law?
4. Is Science guess-work? Did I mention the
word "guess"?
5. Which is hardest to change: Hypothesis,
Theory, or Law?

The speed of light in a material is 0.50 c. what is the critical angle of a light ray at the interface between the material and a vacuum?

The magnetic field inside a superconducting solenoid is 4.50 t. the solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. determine (a) the magnetic energy density in the field and (b) the energy stored in the magnetic field within the solenoid.

Ascientist wants to test ways to reduce pollution in lake . what is the bestway of doing this