Chiều một tia sáng từ không khí tới gặp mặt nước n=1,33 tại I dưới góc tới i. Xác định góc khúc xạ trong hai trường hợp sau a/ i=30*. B/ i=60*

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2