Advantages
The advantages associate with digital communication systems include (i) A common format for encoding different kinds of message signals (e.g., speech signal, video signal, computer data, etc.) for the purpose of transmission. (ii) An improved security of message. (iii) Increased immunity..
Advantages
The offsprings are genetically identical and therefore advantageous traits can be preserved. Only one parent is required which eliminates the need for special mechanisms such as pollination, etc. It is faster. For example, bacteria can multiply every 20 minutes. This helps the org..
Advantages
1) Safer than radiography as there is no exposure to radiation. 2) Non-invasive and painless. 3) Comfortable and inexpensiv..
Advantages
They give better thrust than solid propellants By propellant flow regulation, thrust can be controlled A mixture of liquid oxygen and liquid hydrogen is one of the most important liquid propellants. Oxygen burns liquid hydrogen to produce heat energy. Liquid propellant examples are alcohols,..
Advantages
Friction aids walking. Our feet pushes the floor back and the floor pushes our feet forward, by using friction to do so (every action has equal and opposite reaction). Friction between tyres of vehicles and the road make controlled motion possible. Many machine parts stay in place and are a..
Problems
Problems - 7. 1.375 g of cupric oxide on reduction in hydrogen gas gives 1.098 g of copper. In another experiment, 1.179 g of metallic copper produced 1.476 g of copper oxide. Show that these results illustrate the law of constant proportio..
Problem
1.How many protons and neutrons are there in the following nucleus..
1.How many protons and neutrons are there in the following nucleus..Problems
7. If the energy difference between the electronic states of hydrogen atom is 214.68 kJ mol - 1 , what will be the frequency of light emitted when the electron jumps from the higher to the lower energy state? (Planck's constant = 39.79 x 10 - 1 4 kJ mol - 1..
Problem
10. How many sublevels are possible in each energy leve..
Problem
9.(a) What are the permissible values for l and m when n = 3? (b) Which orbital is specified by l = 2 and n =..
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