Problem: In particle physics, this inequality permits a qualitative understanding of virtual particles which carry momentum, exchange by which and with real particles, is responsible for the creation of all known fundamental forces (more accurately known as fundamental interactions). Virtual photons (which are simply lowest quantum mechanical energy state of photons) are also responsible for electrostatic interaction between electric charges (which results in Coulomb law), for spontaneous radiative decay of exited atomic and nuclear states, for the Casimir force, for van der Waals bond forces and some other observable phenomena.
What are simply highest quantum mechanical energy state of photons?
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Answer: unanswerable

Problem: In the general election, against the advice of his advisors, Eisenhower insisted on campaigning in the South, refusing to surrender the region to the Democratic Party. The campaign strategy, dubbed "K1C2", was to focus on attacking the Truman and Roosevelt administrations on three issues: Korea, Communism and corruption. In an effort to accommodate the right, he stressed that the liberation of Eastern Europe should be by peaceful means only; he also distanced himself from his former boss President Truman.
What was the strategy called that was used by Eisenhower's campaign?
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Answer: K1C2

Problem: In studying adolescent development, adolescence can be defined biologically, as the physical transition marked by the onset of puberty and the termination of physical growth; cognitively, as changes in the ability to think abstractly and multi-dimensionally; or socially, as a period of preparation for adult roles. Major pubertal and biological changes include changes to the sex organs, height, weight, and muscle mass, as well as major changes in brain structure and organization. Cognitive advances encompass both increases in knowledge and in the ability to think abstractly and to reason more effectively. The study of adolescent development often involves interdisciplinary collaborations. For example, researchers in neuroscience or bio-behavioral health might focus on pubertal changes in brain structure and its effects on cognition or social relations. Sociologists interested in adolescence might focus on the acquisition of social roles (e.g., worker or romantic partner) and how this varies across cultures or social conditions. Developmental psychologists might focus on changes in relations with parents and peers as a function of school structure and pubertal status.
Changes to sex organs, height, weight, and muscle mass are examples of which type of change?
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Answer:
biological