What is the half-life of radium-223? Radium-223, with a physical half-life of 11.4 d, emits a high linear transfer (LET) alpha radiation with a range in tissue of less than 100 μm. What are the side effects of radium 223? The side effects of radium 223 can include diarrhoea and sickness but these are generally […]
What is symbiosis and its type?
What is symbiosis and its type? Symbiosis, any of several living arrangements between members of two different species, including mutualism, commensalism, and parasitism. Both positive (beneficial) and negative (unfavourable to harmful) associations are therefore included, and the members are called symbionts. symbiosis. What is the definition of symbiosis for kids? Symbiosis is a close relationship […]
Is sourness a chemical property?
Is sourness a chemical property? 1 Answer. The answer is probably not meaningful, because sourness is not an intrinsic chemical property. What chemical makes things bitter? Many alkaloids, which usually are toxic, elicit a bitter taste. Chemical compounds, such as quinine, produce a bitter taste by binding taste bud receptors that couple to G-proteins. G-protein […]
What are the 5 rules of a topographic map?
What are the 5 rules of a topographic map? Topographic Map Rules Contour Lines Never Cross. Lines indicating elevation should never intersect on a topographic map, because each line represents a different elevation, so it is impossible to have two elevations at the same location. Measuring Steepness. Stream Flow Direction. Contours Close. Concentric Circles. Elevation […]
How do you determine the state of matter in a chemical equation?
How do you determine the state of matter in a chemical equation? Notation for a Chemical Equation The state of matter of each compound or molecule is indicated in subscript next to the compound by an abbreviation in parentheses. For example, a compound in the gas state would be indicated by (g), solid (s), liquid […]
Why can humans not fly?
Why can humans not fly? Humans will never fly by flapping our arms with wings attached, says Mark Drela, Terry J. Kohler Professor of Fluid Dynamics in the Department of Aeronautics and Astronautics. The arms and chest of a human do not have anywhere near enough muscle mass to provide the necessary power. What are […]
What is the adiabatic equation?
What is the adiabatic equation? The normally used equation is the so-called adiabatic equation. For a given fault of I, which lasts for time t, the minimum required cable cross-sectional area is given by: A=√I2tk. where: A – the nominal cross-section area, mm2. I – the fault current in, A. What is work done in […]
What is the correct pathway of light through the eye?
What is the correct pathway of light through the eye? Light passes through the front of the eye (cornea) to the lens. The cornea and the lens help to focus the light rays onto the back of the eye (retina). The cells in the retina absorb and convert the light to electrochemical impulses which are […]
What are three factors that often change at a front?
What are three factors that often change at a front? Fronts Sharp temperature changes over a relatively short distance. Change in moisture content. Rapid shifts in wind direction. Pressure changes. Clouds and precipitation patterns. Which front is not a standard weather front? The correct answer is a. cool front. The other answers are all examples […]
What two species are involved in Commensalism?
What two species are involved in Commensalism? Commensalism is a type of relationship between two living organisms in which one organism benefits from the other without harming it. A commensal species benefits from another species by obtaining locomotion, shelter, food, or support from the host species, which (for the most part) neither benefits nor is […]