Aphoton has 8.0 × 10–15 j of energy. planck’s constant is 6.63 × 10–34 j•s.

The frequency of a photon with an energy of 8.0 × 10⁻¹⁵ J is  1.21 × 10¹⁹  /s.

How to arrived at the answer is attached below

Please note that v= frequency; h= Plank's constant; E= Energy

Rethink and reinvent

Read the sentences below in 1962, i tried to enroll as the first black student at the university of mississippi. the governor of mississippi blocked my entrance which best describes the verbs used in the sentences? o they are past tense verbs, which are often used in narrative essays o they are past tense verbs, which are not often used in narrative essays. o they are future tense verbs, which are often used in narrative essays o they are future tense verbs, which are not often used in narrative essays.