What is the radius of the first Bohr orbit in He+? The radius of first Bohr orbit of hydrogen atom is 0.529 A. What is the radius of the third orbit of He+? the basic formula for calculating the radius of nth orbit is Rn=0.529×(n^2/Z)angstrom where Z is the atomic number of the element. What […]
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 […]
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 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 […]
What has a head but no body heart but no blood leaves but no branches and grows without wood?
Which book is better DC Pandey or cengage physics?
How do you calculate the energy of a rubber band?
How do you calculate the energy of a rubber band? Elastic potential energy (measured in the unit joules) is equal to ½ multiplied by the stretch length (“x”) squared, multiplied by the spring constant “k.” The spring constant is different for every rubber band, but can be figured out (see “Welcome to the Guide to […]
What are three levels of public health agencies in the United States?
What are three levels of public health agencies in the United States? PRIMARY, SECONDARY, AND TERTIARY. LEVELS OF CARE AND PREVENTION. The Three Levels of Care. What are the four components of public health? What Are the Implications of Each of the Four Components of Public Health? Health. For most of the history of public […]
What are 4 water sources?
What are 4 water sources? Thus, water from rivers, lakes and streams, groundwater, desalination and rainwater harvesting are four main sources of water you should know about. Is there a water shortage in the world? As a result, some 1.1 billion people worldwide lack access to water, and a total of 2.7 billion find water […]