Aglass plate whose index of refraction is 1.57 is immersed in a liquid. the surface ofthe glass is inclined at an angle of 54° with the vertical. a horizontal ray in the glass isincident on the interface. the liquid is an oil whose index of refraction is 1.40. theincident horizontal ray refracts at the interface. the angle that the refracted ray, in the oil, makes with the horizontal is closest to:

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min