The diagram shows a proposed design for a ship that could be used for long-distance space travel. Explain why the ship must rotate so that passengers feel effects similar to gravity.

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

Which are causes of mechanical weathering? (check all that apply) a. acid rain b. plant growth c. animal actions d. carbon dioxide e. pressure release i chose b & e and got the question wrong.

The drag force, fd, imposed by the surrounding air on a vehicle moving with velocity v is given by fd = cdaρv 2/2 where cd is a constant called the drag coefficient, a is the projected frontal area of the vehicle, and ρ is the air density. an automobile is moving at v = 80 kilometers per hour with cd = 0.28, a = 2.3 m2, and ρ = 1.2 kg/m3.