You want to swim straight across a river that is 76 m wide. youfind that you can do this if you swim 28degree upstream at aconstant rate of 1.5m/s relative to the water. at what rate doesthe river flow? the angle is measured from the river bank( directlyupstream is θ=0 degree while directly across the river isθ=90degree).

Explanation:

given,                                          

width of river = 76 m                    

swimming at an angle = 28°                

constant rate of speed = 1.5 m/s        

rate at which river flow = ?                              

hence, the rate of flow of river is equal to

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

he made 11 calls in one day