Am radio signals broadcast electromagnetic radiation at frequencies between 640 khz and 1.20 mhz.

(a) what is the shortest wavelength of an am radio signal?
in m

(b) what is the longest wavelength?
in m

Enzyme make a hormone as a catalyst

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.