gamma radiation is both a type of nuclear radiation and electromagnetic radiation.
Radiation has both electric and magnetic fields and travels in waves. It comes from natural and man-made sources. The intensity of electromagnetic radiation varies from low energy to high energy. There are radio waves, microwaves, infrared rays, visible rays, ultraviolet rays, X-rays, and gamma rays.
Electromagnetic radiation consists of an electric field (E) of varying strength perpendicular to the direction of propagation of the radiation and a magnetic field (M) perpendicular to the electric field. Both fields move at the speed of light (c).
Electromagnetic radiation occurs when atoms absorb energy. The absorbed energy causes one or more electrons to change positions within the atom. Electromagnetic waves are generated when electrons return to their original positions.
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Answer:
Explanation:
A recent study of college students from low-SES backgrounds and high-SES backgrounds conducted by VanKim and Laska showed that college students from low-SES backgrounds ate more fast food and fewer fruits and vegetables than their higher-SES counterparts. According to them "Higher nutritional knowledge, which is associated with a greater SES, is associated with engagement in more healthful weight-loss methods".
Answer:
a. party realignment.
Explanation:
Party realignment refers to the rapid shift of political power among different political parties in a region. It happened in the case of Texas where the majority of voters change their political alliance from democrats to the republicans. And the reason for his was noted in history with the enactment of the Civil Rights Act of 1964 due to which conservative white democrats choose the Republican party.
Answer:
D
Explanation:
Articles of confederation were weak and the federal gov't had no power.
