Answer the following question given this paragraph: Distance is the length of the route between two points. The distance of a race, for example, is the length of the track between the starting and finishing lines. In a 100-meter sprint, that distance is 100 meters. Q: What is the length of the route between two points? Choices: - speed - direction - velocity - distance A:
distance
Answer the following question given this paragraph: As the temperature of a perfect crystal increases, its particles start to vibrate slightly around their optimal positions, thus increasing the entropy of the system. The dependence of entropy on temperature varies by substance, so the only temperature at which all crystals have the same entropy is absolute zero. The standard entropy of a substance is a measure of its entropy at 25C and 1 atm of pressure. Like standard enthalpy of formation values, standard entropies are tabulated for a wide range of substances. However, unlike enthalpy of formation values, all standard entropy values are positive, because the absolute zero for entropy is the most ordered possible state. Additionally, this means that pure elements in their standard states do not have a standard entropy of zero. Q: The measure of a substances entropy at 25 degrees celsius is known as it's? Choices: - specific entropy - new entropy - limited entropy - standard entropy A:
standard entropy
Q: Answer the following question given this paragraph: 29.3 Photon Energies and the Electromagnetic Spectrum 11. Why are UV, x rays, and rays called ionizing radiation? 12. How can treating food with ionizing radiation help keep it from spoiling? UV is not very penetrating. What else could be used? 13. Some television tubes are CRTs. They use an approximately 30-kV accelerating potential to send electrons to the screen, where the electrons stimulate phosphors to emit the light that forms the pictures we watch. Would you expect x rays also to be created? 14. Tanning salons use "safe" UV with a longer wavelength than some of the UV in sunlight. This "safe" UV has enough photon energy to trigger the tanning mechanism. Is it likely to be able to cause cell damage and induce cancer with prolonged exposure? 15. Your pupils dilate when visible light intensity is reduced. Does wearing sunglasses that lack UV blockers increase or decrease the UV hazard to your eyes? Explain. One could feel heat transfer in the form of infrared radiation from a large nuclear bomb detonated in the atmosphere 75 km from you. However, none of the profusely emitted x rays or rays reaches you. Explain. Can a single microwave photon cause cell damage? Explain. In an x-ray tube, the maximum photon energy is given by. Q: Tanning salons claim to use a "safe" form of what light, with a longer wavelength than that in sunlight? Choices: - infrared - microwave - X rays - uv (ultraviolet) A:
A: uv (ultraviolet)
Question: Answer the following question given this paragraph: Gymnosperms are seed plants that produce naked seeds in cones. There are about 1000 species of gymnosperms. Conifers are the most common group of gymnosperms. The spruce tree in Figure below is an example of a conifer. Q: What are seeds plants that produce naked seeds in cones called? Choices: - cytoplasm - lipids - angiosperms - gymnosperms A:
Answer: gymnosperms
*Question*
Answer the following question given this paragraph: Some of Earth's freshwater is found in wetlands. A wetland is an area that is covered with water, or at least has very soggy soil, during all or part of the year. Certain species of plants thrive in wetlands, and they are rich ecosystems. Freshwater wetlands are usually found at the edges of steams, rivers, ponds, or lakes. Wetlands can also be found at the edges of seas. Q: What is the name for an area that is covered in water, or at least has soggy soil, during all or part of the year? Choices: - coastal zone - a stream - a crater - a wetland A:
**Answer**
a wetland
(Question)
Answer the following question given this paragraph: culture (outside the body under optimal growing conditions), the length of the cycle is about 24 hours. In rapidly dividing human cells with a 24-hour cell cycle, the G1 phase lasts approximately nine hours, the S phase lasts 10 hours, the G2 phase lasts about four and one-half hours, and the M phase lasts approximately one-half hour. In early embryos of fruit flies, the cell cycle is completed in about eight minutes. The timing of events in the cell cycle is controlled by mechanisms that are both internal and external to the cell. Q: The timing of events in what cycle - which lasts just minutes in fruit fly embryos - is controlled by mechanisms that are both internal and external to the cell? Choices: - circadian cycle - carbon cycle - life cycle - cell cycle A:
(Answer)
cell cycle