The focus is the place inside Earth's crust where an earthquake originates. The point on the Earth's surface directly above the focus is the epicenter. When energy is released at the focus, seismic waves travel outward from that point in all directions.
Answer:
the most common political unit
In the brain? Or on the Earth? The earth's hemispheres are artificial constructions to make it easier for us to draw maps, they don't really exist and are mostly arbitrary (and they're connected by other land). In the brain, the corpus callosum connects the brain hemispheres (if severed, it causes severe impairment to language skills and creativity).
Answer:
1. 
2. The equation to calculate Density is Mass / Volume. You are given that the density is 5.45 and the mass is 65; 5.45 = 65 / v. So v = 65 / 5.45; v = 11.93 mL (or if you want your answer to consider significant figures, v = 12 mL).
3.
m = 43.5 g
V = 50 mL
d = 43.5 g / 50 mL = 0.87 g/mL
Density of this cooking oil is 0.87 g/mL.
Explanation:
An earthquake's epicenter is the earthquake's focus
