a swimmer heads directly across a river swimming at 1.6 m/s relative to still water. she arrives at a point 40 m downstream from the point directly across the river, which is 80 m wide.

An ideal polarizer with its transmission axis rotated 30 degrees to the vertical is placed in a beam of unpolarized light of intensity 10w/m^2. after passing through the polarizer, what is the intensity of the beam? a. 8.7 w/m^2 b. 7.5 w/m^2 c. 5.0 w/m^2 d. 10 w/m^2 e. 2.5 w/m^2

Alandscaper is shopping for landscaping materials. she wants to use materials through which water flows easily. which materials should she choose? check all that apply. clay gravel granite rocks with cracks loosely packed soil

What is the orbital period of a spacecraft in a low orbit near the surface of mars? the radius of mars is 3.4×106m.