pictures provide information that can be useful in diagnosing a wide variety of diseases and conditions. Radio waves cause the molecules to create faint signals that are used to view the body in narrow, axial slices. How does MRI Work? An MRI scanner has a large magnet with a tube shaped tunnel through the middle. The MRI machine picks up signals from the nuclei of the hydrogen atoms in the body. A computer converts these signals them into a black and white picture. The magnets from the MRIs develops a
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Chapter 1: Introduction to Zoology Concept of Science • Frings and Frings - defined science as an organized body of knowledge that is gained and verified by exact observation and experimentation and organized by logical thinking. • Schafersman - defined science as a method of discovering reliable knowledge about nature. • Science is factual. • Science is not merely compiled. • Science is a way of asking questions about the natural world. • Guided by natural laws (physical & chemical).
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short wavelength (0.0005 ~ 0.1 nm). The particles emitted in radioactive decay processes have high kinetic energy, which is enough to ionize an atom or a molecule; especially photons, which can ionize atoms and molecules through the photoelectric effect and Compton scattering. And if the radiation is sufficiently intense, the speed of destroying molecules is faster than coping them, which can cause harmful chemical damages to healthy cells and even to DNA. But on the other hand, the damaging effects
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Water's structure defines its many properties • Atoms – building blocks of all matter • Subatomic particles – Protons – Neutrons – Electrons • Number of protons distinguishes chemical elements Water is a molecule • Strong covalent bonds between one hydrogen (H) and (two) oxygen (O) atoms • A single molecule of water is stable. • H20 is dipolar – Bent shape gives water its unique properties • Dipolar nature leads to molecules attracting each other Hydrogen Bonding •
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What are the elements in PVC? Answer: Carbon, hydrogen, chlorine. If it's flexible, there's probably some oxygen in there as well. Rigid PVC is poly(vinyl chloride), where vinyl chloride is ethene with one of the hydrogens replaced by a chlorine atom. Flexible PVC ... sometimes called simply "vinyl" ... has additives like octyl phthalate (which contains carbon, hydrogen, and oxygen) that keep the polymer swollen and flexible. What elements are electrical wiring made out of? Answer: Almost
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TERM PAPER OF CHEMISTRY TOPIC: CARBON NANOTUBE Submitted to Submit by: Mr. Balwant Singh Bhist Mr.Shailja Kant yadav Deptt. Of CHEMISTRY Roll. No. : - A02
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questions, procedures, tools, results, and conclusions can be understood. Matter 11. Matter is anything that has mass and occupies space. 12. Matter is made up of small particles called atoms. 13. Matter can exist as a solid, liquid, or gas. 14. Matter can be classified as elements, compounds, and mixtures. 15. Matter can be described by its physical properties that include shape, density, solubility, odor, melting point, boiling point, and color. 16. Some physical
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variety of atoms (e.g. carbon dioxide). A gas mixture would contain a variety of pure gases much like the air. What distinguishes a gas from liquids and solids is the vast separation of the individual gas particles. This separation usually makes a colorless gas invisible to the human observer. The interaction of gas particles in the presence of electric and gravitational fields are considered negligible as indicated by the constant velocity vectors in the image. The gaseous state of matter is
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between the energy, frequency, and the wavelength of waves, identifying line and band spectra, determining the relationship between the colors of the visible light spectrum and their corresponding wavelengths and frequencies, determining an unknown element and the measurement of its emission spectrum, and lastly understanding the difference between frequency, wavelength, velocity, and interference. To properly understand the frequency, wavelength, and interference a slinky was used to show the different
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be describes as a scientific theory of the movement of an object. Kinetic theory relates to capacity of a subject to do work on another object due to their motion. Kinetic theory of matter explains that the same is compose of tiny pieces of, atoms or molecules in continues motion. The theory states that the actions of matter inside an object and the actions heat generates. Kinetic theory explains as well the temperature transition by the means of transmission, where thermal powers shows to be conducted
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