What is an awareness level responder? Awareness-level first responders are trained to act only defensively. Recognize the chemicals used at your facility, learn about potential spill or release scenarios, and then learn how to identify chemical spills or releases. Evacuate others and yourself from the spill area. Which action is within the awareness level scope […]
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 […]
How far away from a nuclear blast is safe?
How far away from a nuclear blast is safe? six feet How can cockroaches survive a nuclear bomb but not raid? Why do cockroaches survive nuclear attacks but are killed by Raid? Nuclear bombs not directly aimed at cockroaches may miss them underground for long enough to allow for radiation to dissipate enough for their […]
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 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 […]
Why are there two tides each day?
Why are there two tides each day? This occurs because the moon revolves around the Earth in the same direction that the Earth is rotating on its axis. Since the Earth rotates through two tidal “bulges” every lunar day, we experience two high and two low tides every 24 hours and 50 minutes. Is it […]
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 […]
Is threshold frequency the same for all metals?
Is threshold frequency the same for all metals? Different metals have different values of work function because of difference in their electronegativity. The frequency of the photon with energy equal to work function is called threshold frequency. The value of photocurrent depends on the intensity of the falling radiation. Why is there a threshold frequency? […]
What is the radius of the first Bohr orbit in He+?
What is the most dangerous mutation?
What is the most dangerous mutation? Insertion or deletion results in a frame-shift that changes the reading of subsequent codons and, therefore, alters the entire amino acid sequence that follows the mutation, insertions and deletions are usually more harmful than a substitution in which only a single amino acid is altered. What are examples of […]