A 2.5-kg ball moving at 2.5 m/s collides with a 2.5-kg stationary ball. If the first ball is at rest after the collision, what is the velocity of the second
ball?

2.1 m/s
4.2 m/s
2.5 m/s
8.4 m/s

What pressure difference is required between the ends of a 2.0-m-long, 1.0-mm-diameter horizontal tube for 40 c water to flow through it at an average speed of 4.0 m/s?

Describe cytokinesis in plants and animals. in animals: in plants.

Scientist have use computer models to create a series of maps that show how susceptible coastal cities in island countries are to the sea rising at different levels. the map shows that a 1 meter rise would swap cities all along the us eastern seaboard. a 6-meter sea level rise with sub merge a large part of florida. thermal expansion has already raise the oceans 10 to 20 centimeters the most likely cause, directly and indirectly, for such a rise in sea level is