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The wavelength of light beam B is twice the wavelength of light beam B.The energy of a photon in beam A is:
1960s
A decade marked by significant cultural, political, and social changes worldwide, including the civil rights movement, the Vietnam War, and the counterculture revolution.
Post-Cold War
The period following the end of the Cold War, marked by significant geopolitical shifts, the dissolution of the Soviet Union, and changes in global power dynamics.
International Crisis
A situation of global scale where political, military, economic, or social problems threaten the stability of one or more nations.
Gulf War
Military action in 1991 in which an international coalition led by the United States drove Iraq from Kuwait, which it had occupied the previous year.
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