Aboat is 4.0meters long and 2.0meters wide. its water line is 1.0meter from the bottom of the boat; it is submerged to this water line. what is the mass of the boat? a. 8000kgb. 600kgc. 130kgd. 800kge. 200kg

option A

Explanation:

given,

Length of boat = 4 m

width of boat = 2 m

height up to which water is displaced = 1 m

Volume of water displaced by the boat

 V =  L x B x H

 V = 4 x 2 x 1

 V = 8 m³

buoyant force acting on the boat

F_b = ρ g V

m g = ρ g V

 m = ρ V

ρ is the density of water which is equal to 1000 Kg/m³

 m = ρ V

 m =1000 x 8

 m = 8000 Kg

hence, mass of the boat is equal to 8000 Kg

so, the correct answer is option A

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue

i guess it’s a and b