Answer the following question given this paragraph: 27.8 Polarization Polarization is the attribute that wave oscillations have a definite direction relative to the direction of propagation of the wave. EM waves are transverse waves that may be polarized. The direction of polarization is defined to be the direction parallel to the electric field of the EM wave. Unpolarized light is composed of many rays having random polarization directions. Light can be polarized by passing it through a polarizing filter or other polarizing material. The intensity I of polarized light after passing through a polarizing filter is I = I 0 cos 2 , where I 0 is the original intensity and is the angle between the direction of polarization and the axis of the filter. Polarization is also produced by reflection. Brewster's law states that reflected light will be completely polarized at the angle of reflection b , known as Brewster's angle, given by a statement known as Brewster's law: reflected light travel and. Q: What type of light is composed of many rays having random polarization directions? Choices: - reflected light - polarized light - diffracted light - unpolarized light A:
unpolarized light
Answer the following question given this paragraph: The thyroid gland is a large gland in the neck. Thyroid hormones increase the rate of metabolism in cells throughout the body. They control how quickly cells use energy and make proteins. Q: Hormones produced by what gland in the neck increase the rate of metabolism in cells throughout the body? Choices: - pituitary - kidney - thymus - thyroid A:
thyroid
Q: Answer the following question given this paragraph: Stars spend most of their lives on the main sequence, fusing hydrogen into helium. Q: Stars spend most of their lives on the main sequence, fusing hydrogen into what? Choices: - neon - carbon - nitrogen - helium A:
A: helium
Question: Answer the following question given this paragraph: Water is the solvent in solutions called acids and bases. To understand acids and bases, it is important to know more about pure water, in which nothing is dissolved. In pure water (such as distilled water), a tiny fraction of water molecules naturally breaks down, or dissociates, to form ions. An ion is an electrically charged atom or molecule. The dissociation of pure water into ions is represented by the chemical equation:. Q: Water is the solvent in solutions called acids and? Choices: - proteins - alkalines - nutrients - bases A:
Answer: bases
*Question*
Answer the following question given this paragraph: Q: What type of sunlight inhibits vertical growth in a plant? Choices: - infrared - reduced - indirect - direct A:
**Answer**
direct
Q: Answer the following question given this paragraph: Figure 9.3 Intervertebral Disc An intervertebral disc unites the bodies of adjacent vertebrae within the vertebral column. Each disc allows for limited movement between the vertebrae and thus functionally forms an amphiarthrosis type of joint. Intervertebral discs are made of fibrocartilage and thereby structurally form a symphysis type of cartilaginous joint. Q: What are intervertebral discs made of? Choices: - intercartilage - fibrotissue - connective cartilage - fibrocartilage A:
A: fibrocartilage