The hoover dam is 221 m tall and 379 m wide. approximating it as a flat plate, determine the effective resultant force on the dam and where it acts. what is the gage pressure at the bottom of the dam? assume water has a constant density of 1000 kg m^3 .

Ariver flows from north to south at 8 km/h. a boat is to cross this river from west to east at a speed of 20 km/h (speed of the boat with respect to the earth/ground). at what angle (in degrees) must the boat be pointed upstream such that it will proceed directly across the river (hint: find the speed of the boat with respect to water/river)? a 288 b. 21.8 c. 326 d. 30.2