The index of refraction of a substance is 1.5. find the sine of the angle of refraction if the sine of the angle of incidence is 0.15.
sin r =

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

Match each vocabulary term to its definition. 1. electrons neutral subatomic particles found in the nucleus of the atom 2. neutron lowest energy position of an electron in an atom 3. photon the path of an electron around the nucleus of an atom 4. ground state negatively charged, subatomic particles 5. protons packet of energy of specific size 6. element substance with only one type of atom 7. orbital positively charged, subatomic particles found in the nucleus of the atom

Which body part transports oxygen removes waste materials in carries nutrients to the body as part of the circulatory system