The part of the eye that focuses light is the . iris

lens

vitreous humor

optical nerve

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat

Hi , i am new here can anyone me out with this question why is space black after having so many shining objects like sun , moon , stars

Two point charges, separated by 1.5cm, have charge values of +2.0 and-4.0 uc, respectively. what is the value of the mutual force between them