If you were an astronaut in the middle of the near side of the moon during a full moon, how would the ground around you look? how would earth, high in your sky look? describe what is in sunlight and what is in darkness.

Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25˚ e? this would have obliterated the city.

What happens when you slowly pulled the carboard?

Which of the following is a characteristic shared by both electron and light microscopes? a. they both employ the use of objective lenses. b. both microscopes require an internal camera to visualize the specimen. c. both microscopes have a resolving power of 0.01 nm. d. they both utilize white light to magnify the specimen.