1. a predicts that the strong, weak, and electromagnetic forces should become indistinguishable at high temperatures. 2. the is a single force that unifies the electromagnetic and weak forces. 3. was a dramatic expansion of the universe thought to have occurred when the universe was only a tiny fraction of a second old. 4. forces us to think about why the sky is dark at night. 5. observations of the provide a way to test our theory of the big bang. 6. when a particle of ordinary matter meets its precise opposite particle of antimatter, the result is with complete conversion of mass into energy.

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.

What was the purpose of the apollo program? to put a man in orbit to launch a spy satellite to launch a space station to put man on the moon