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 […]
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 […]
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 […]
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 […]
What is the magnitude of a displacement?
What is the magnitude of a displacement? Magnitude of displacement is equal to the absolute value of the displacement vector. In physical sense, the magnitude of displacement is equal to the linear distance between initial and final positions along the straight line joining two positions i.e. the shortest distance between initial and final positions. Does […]
What does a wave carry from place to place?
What does a wave carry from place to place? Waves carry energy from one place to another. Because waves carry energy, some waves are used for communication, eg radio and television waves and mobile telephone signals. For example, water waves have to travel in water. Sound waves need a solid, a liquid or a gas […]