Students and Teachers Forum
It is mpossible to remove all the green house gases like carbondioxide, methane, chlorofluorocarbon,etc from the atmosphere but can be minimized by following ways : - by decreasing deforestation - by reducing the use of fossil fuels - by .....
Honeybees do not exactly make honey. Instead, they improve the nectar produced by flowers. The honey we love to eat is nectar that bees have swallowed, regurgitated, and condensed for us (and for themselves). In the course of her lifetime, one .....
दिइएको निबन्ध अध्ययन गरी आफ्नै शैलीमा लेख्ने अभ्यास गर्नुहोस् है त .....
Of course, the constitution of Nepal, 2072, is known as a document of mutual understanding. Because different representatives from different backgrounds are elected for making the constitution. These representatives try to keep the demands and .....
Indeed regional balance during development is of high importance. We know that places that have maintained regional balance are more developed than the region which failed to maintain any kind of balance. If we maintain balance during development .....
We know that Nepali society has been traditionally been dominated by males. Women in our society are always considered as subordinate to males. Many major decisions are taken by males only without seeking consent of women who may equally affected .....
Development can be defined as an effort by humans for betterment with efficient utilisation of resources and seeking to maintain the balance between demand and .....
Velocity is defined as the rate of change of displacement.Its unit is m/s. Velocity of an object is 5 m/s means, object covers 5 m in 1 .....
Movement is the act or process of moving people or things from one place or position to .....
Solution : retardation R = 12.5 m/s2 acceleration a = -12.5 m/s2 initial velocity u = 25 m/s final velocity v = 0 m/s Then, a = ( v - u ) / t or, -12.5 = ( 0 - 25) / t or, -12.5 t = - 25 or, t = 2 sec Thus, the time is 2 .....
Solution : Sample Space = S S = { 7,8,9,....17} n (S) = 11 Set of cube number = {8} n(C ) = 1 Set of odd numbers = {7,9,11,13,15,17} n (O) = 6 Then, P ( C or O ) = 1/11 + 6/11 = .....
Let cost price of one radio be y. Then, CP of another = 6000 - y SP of frist radio = CP + P% of CP = y + 20/ 100 x y = y + y/5 = 6y / 5 Again, in for SP of 2nd radio, L% = 10 % SP of 2nd radio = CP - L% of .....
Dignity of labour may be defined as the philosophy in which every kind of work that is responsible for bringing positive change to society is equally valued and respected. It is a principle in which no work is considered minor but are of equal .....
Unitary government is a political system in which all the power and decision-making authority is centralised. A single authority is responsible to decide for all. We know that Nepal is a country of diversity. Nepal is home to 10 religious .....
Development may be defined as any positive change that results in social, moral and cultural upliftment of the community. It is the process in which each community tries to uplift itself by effective utilisation of every .....
Hollow mean
Plan may be defined as well formulated strategy that is responsible for bringing positive changes to the community. A plan considers need and demand of each community and tries to satisfy them by effective utilisation of the available means and .....
Government is an executive branch of nation and has easy access to financial, natural and human resources. Due to this people expect that their government will help them in case of any kind of crisis. Government has the means and resources to .....
There are different types of energy. Some of them are : 1. Biomass energy 2. Nuclear energy 3. Hydropower energy 4. Wind energy 5. Nuclear energy, .....
If the object is placed between Focus F and Optical centre O, convex lens forms virtual and erect .....
solution, Let, n(s) be exhaustive events, n(A) be the number of events of black and n(B) be the number of events of face cards. Here, n(s)= 52, n(A)= 26, and n(B)= 12. Also, n(AnB) = 6 Now, using law of addition of non-mutually .....
Solution : load l = 750N Effort E = 500 N load distance LD = 25 cm Effort distance ED = 100 - 25 = 75 cm Then, efficiency = ? Now, Mechanical advantage MA = l/E = 750 / 500 = 1.5 and, Velocity ratio VR = ED/LD = 75/25 = 3 Then, Efficiency = .....
Hydraulic machines includes hydraulic jack, hydraulic press, hydraulic brakes , etc. We use hydraulic in various ways: We use hydraulics in bolting with hydraulic torque wrenches. They make use of hydraulics to draw the fuel from their storage .....
Migration of a species to a new community can cause a top-down effect within the community. The ecosystems of that place abandoned by these organisms as well as their destination also get affected as the organisms of the particular tropical level .....
Ecosystem The ecosystem is the structural and functional unit of ecology where the living organisms interact with each other and the surrounding environment. In other words, an ecosystem is a chain of interaction between organisms and their .....
Dromophobia is the fear of crossing .....
The HDI framework comprises three indices: Life Expectancy Index, based on life expectancy at birth. Education Index, based on mean years of schooling. Income Index, based on Gross National Income (GNI) per capita by Purchasing Power Parity .....
Superstitions are the beliefs or practices that arise from the ignorances and misunderstandings of natural or other events. It is the irrational belief in supernatural being, magic, fate or false understanding.
Some examples of superstitions in .....
Climate change is natural event. Since climate is dynamic in nature, it changes regularly. The change in the normal weather pattern for prolong period may be defined as climate change. The reasons for the climate change are; Emission of the .....
Development is an effort by humans to improve oneself along with their friends, family and community. Development is not possible without proper and timely development of Human Resources as they utilises the other remaining two .....
Division is splitting into equal parts or groups. It is the result of "fair sharing". Example: there are 12 chocolates, and 3 friends want to share them, how do they divide the chocolates? Answer: They should get 4 each. We use the .....
solution, Given, loss% = 4% let C.P of table be x Now, S.P = C.P - loss% of C.P = x- 4x/100 =0.96x If it is sold for Rs39 more, profit will be 9% S.P2 = 0.96x + 39 Now, C.P .....
Computer is a versatile electronic machine, which accepts data as input, processes it according to instructions and produces results as the output. It is essentially problem solving .....
Solution : Total sample space n(s) = 39-6 + 1 = 34 Set of prime numbers = {7,11,13,17,19,23,29,31,37} n(P) = 9 Set of cube numbers = {8,27} n(c) = 2 Then, P (P or C) = P(p)+ P(C) = 9/34 + 2/34 = .....
Solution : Total sample space n(s) = 39-6 + 1 = 34 Set of prime numbers = {7,11,13,17,19,23,29,31,37} n(P) = 9 Set of cube numbers = {8,27} n(c) = 2 Then, P (P or C) = P(p)+ P(C) = 9/34 + 2/34 = .....
You might have learnt about Amoeba, Paramecium, Euglena, etc. They carry out their life processes inside their single cell. Most of the unicellular organisms are .....
We know, Area of the triangle = √{s(s-a)(s-b)(s-c)} or,336 = √{42(42-30)(42-b)(42-c)} Putting the value of c from equation (i), or, 336 = √{42 ⤫ (12)(42-b)(42-54+b)} or,336 = √{504(42-b)(b-12)} Squaring .....
Any kind of event that is responsible for any kind of disharmony in society is known as social problems. They are the conditions that are very much likely to cause long term damage to the society. Some of the examples are: racism, crime, .....
Resources may be defined as raw materials that are used by humans for various primarily for their economic development. These materials are used and processed while developing the final product. Ex: Sugarcane is resources that is duly processed to .....
Cooperative nature in Nepalese society is in slow decline. We can see that the present generation is less cooperative than their ancestors. Some of the reasons are: Effect of western culture and tradition on our own Effect of globalisation on .....
Acceleration of a body is defined as the rate of change of its velocity with time.Velocity of the body increases with time. i.e Acceleration = Change in velocity / Time taken for change Retardation means negative acceleration. If the velocity of .....