What is the study of emission and absorption spectra in relation to element identification and relative motion

The sixth amendment of the u. s. constitution guarantees the right to which of the following?

In the early 1800s, north africa was different from southern africa in that

Why did great britain finally send an ambassador to the united states in 1791? a) great britain forgave the colonies for their rebellion. b) the u. s. threatened special trade restrictions on british ships. c) great britain did not want the u. s. to become allies with france. d) the u. s. would seek a closer alliance with spain if great britain did not send an ambassador.