Imagine you are going on a rid in a spacecraft next to earth. Your trip takes one whole year. Describe earth's tilt in the northern hemisphere during your trip. What happens as a result of the tilt?

Radioactive gold-198 is used in the diagnosis of liver problems. 198Au decays in a first-order process, emitting a β particle (electron). The half-life of this isotope is 2.7 days. You begin with a 5.6-mg sample of the isotope.

What is the approximate size of Earth's magnetic field? Where are Earth's magnetic poles? Where is the magnet that causes Earth's magnetic field located? What is this magnet made of? Does Earth's magnetic field move?

An ordinary flea has a mass of 210. How many newtons does it weigh?

Describe the earth's rotation on it axis

Describe electric charge

How do air quality scientists ensure the air is cleaned? What steps do they take?

A 4.0 * 102-nm thick film of kerosene (n = 1.2) is floating on water. White light is normally incident on the film.

Which of the following statements about how sound waves travel is correct? A Sound waves travel faster through solids than through liquids. B Sound waves travel faster through gases than through solids.

The idea that life could spring from nonliving matter is called? a. development. b. homostasis. c. spontaneous generation. d. evolution. 20 PTS

Physics how to calculate disintegration energy