The source of the centripetal force that keeps the earth revolving around the sun is
a 1.50-kilogram ball is attached to the end of a 0.520-meter string and swung in a circle. the velocity of the ball is 9.78 m/s. what is the tension in the string?

Explore the ways that boundaries influence identity, interaction and exchange. things to consider: what is the race/ethnicity. how easy is it to interact/trade with others.

In the developed world, describe the changing role of women in agriculture.

Afarmer who is grown corn for the past five years notices in the sixth year that the his harvest is significantly smaller, despite an increase in labor on the farm. the following year, the harvest continue to decline. which of the following explanations most plausibly accounts for the reduction in corn yield? a) soil degradation b) desalinization c) better irrigationd) terracing