How does michio kaku establish the importance of allowing the public to access scientific research in "why no policeman on the block? "

a: by explaining residual paranoia from the cold war
b: by quoting hawthorne’s idea of an intelligent planet
c: by contrasting secret government projects with public successes
d: by describing the relationships between scientists and engineers

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

Mrs. smith ordered a root beer float (vanilla ice cream + root beer). mrs. smith noticed that the three states of matter (solid, liquid, and gas) all existed simultaneously in her root beer float. a. identify each phase of matter in the root beer float. b. describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? ) c. identify one phase change you would see in a root beer float and described what causes this change.

Geothermal energy for industrial use is available almost anywhere. a.true b.false