Students and Teachers Forum
Janto is a traditional grinder, composed of two stone. It is used to crush grains like rice, wheat .....
Here, (x2 + xy + y2) / (x + y) + (x2 - xy + y2) / (x - y). Taking LCM, we get\ = [(x - y) (x2 + xy + y2) + (x + y) (x2 - xy + y2)] / [(x + y)(x - y)]. = [ x3 - y3 + x3 + y3] / (x2 - .....
Here, 4∛192 - 4∛375 + 2∛24. = 4∛(2.2.2.2.2.2.3) - 4∛(3.5.5.5) + 2∛(2.2.2.3). = 16∛3 - 20∛3 + 4∛3. = ∛3( 16 - 20 + 4) Can you complete .....
Here, 1st expression = = x2 + x + 1 2nd expression = x7 - x4 = x4(x3 - 1) .....
Here, The total surface area of a hemi sphere = 7392 cm2 or, 3πr2 = 7392 cm2 or, πr2 = 7392/ 3 .....
Here, x ∛y-1 ⨯ y ∛x-1 = x . y-1/3⨯ y . x-1 / 3 = x1 - 1/3 . y1 - 1/3 [ Since, xm . xn = xm + n.] = .....
Here, P = Initial population = 50,000 Final population = PT = 66,550 Rate = R = 10% Time = T = ? We know, PT = P(1 + R/100)T or, 66550 = 50000 (1 + 10/100)T or, 1.331 = 1.1T Solve and find .....
Former Prime Minister Tanka Prasad Acharya was the founder of Nepal's first political party in the 1930's. He founded the Nepal Praja Parishad, which led the movement to overthrow the Rana family rule. The Ranas had governed Nepal .....
The constitutional assembly may be defined as an elected body whose primary aim is to draft the constitution of the nation. The constitution if approved by the majority of the floor becomes the fundamental law of the nation based upon which .....
Refractive index Critical index 1. The critical angle is that angle at which, if a ray is incident while passing from a denser to a rarer medium, the angle of refraction is 90o. 1. The index of refraction .....
Here, LHS = cos15 sin15 = cos(45 - 30) sin(45 - 30) Using formula, we get = [ cos45 cos30 + sin45 sin30] [ sin45 cos30 - cos45 sin30] Now use values of sin45, sin30, cos45 & cos30 and get .....
Here, LHS = tan(45 + A) Using formula of tan(A + B), we get = ( tan45 + tanA) / ( 1 - tan45 tanA) Put tan45 = 1, we get\ = ( 1 + tanA)/(1 - tanA) Now use tanA = sinA/cosA and simplify and get .....
Here, LHS = cot(45 + A) Using formula of cot(A + B), we get = ( cot45 . cotA - 1 ) / ( cot45+ cotA) Put cot45 = 1, we get = ( cotA - 1)/(1 + cot A) Now use cotA = cosA/sinA and simplify and get .....
Here, LHS =cos(α -β)sinα . sinβ Using formula of cos(A - B), we get = ( cosα cosβ + sinα sinβ ) / sinα sinβ Seperating .....
Here, LHS = tanA + tanB = sinA / cosA + sinB/cosB [ Since, tan = sin / cos.] Taking LCM, we get = ( sinA cosB + cosA sinB) / ( cosA cosB) = Sin(A + B) / ( cosA cosB) = .....
The development in Science and technology means that people now live longer. They have better access to the health facilities. However, it also means that there is always the possibility of over-exploitation of the environmental .....
Fundamentally home, school and community are considered as the basic area that provides health education from the social point of view. Health education is a type of education that is designed for individual’s or the public healthy .....
Health, population and environment are integrated terms. They are interrelated in many respects. The health of an individual is directly associated with the massive environmental degradation. That’s why the ground of all these subjects is .....
A group of families and ethnic groups from the community. Community wide health education is frequently called public health education. Public health education is commonly conducted through activities of health departments, voluntary health .....
Population education can be defined as a process of developing awareness and understanding of population situation among people. It makes people more responsible for managing the population with the resources available for development. It is an .....
Health education is the process which enables individuals and groups of individuals to realize their health need. It also match the needs to necessary health behaviors for attainment of positive health. Health education is the process of that .....
Environmental studies are the scientific study of the environmental system and the status of its inherent or induced changes on organisms. It includes not only the study of physical and biological characters of the environment but also the social .....
The scope of environmental education can be divided into biological, physical and sociological aspects. They are described below: Biological aspect: Biological aspects is one of the most important aspects of environmental education. Human being, .....
First case, Population at the beginning of 2061 B.S., P = 5580. Rate of population growth, R = 2.2%. Migrated there, .....
Here, P = Rs.5000 R1 = 4% R2 = 3% R3 = 2% CI = ? We know, CI = P[(1 + R1/100)(1 + R2/100)(1 + R3/100) - 1] = 5000[(1 + 4/100)(1 + 3/100)(1 + 2/100) - 1] Calculate .....
Here, P = Rs.576 Time = T = 2 yrs CI = Rs.153 Rate = R = ? We know, CI = P[ ( 1 + R/100)T - 1] or, 153 = 576[ ( 1 + R/100)2 - 1] or, 1.265625 = ( 1 + R/100)2 Now solve it by taking square roots on both sides .....
You have called .....
Here, AB is the diameter of a circle & A(-1,0) ,B(5,k) and equation of AB is x-3y=-1. So, B(5,k) must satisfy the equation of AB , x-3y= -1 or, 5 - 3k = -1 or, k = 2. Thus, B is ( 5, 2) Finally, use the formula for .....
Here, We have given, 16x2 +24xy+9y2 + 24x + 18y + 5 = 0. or, 16x2 + (24y + 24)x + (9y2 + 18y + 5) = 0. Now comparing this with ax2 + bx + c = 0 we get a = 16 + 24y + 24 & c = y2 + .....
यो एकाङ्की (संवाद) विधामा पर्दछ । यसको मुख्य सन्देश यस्तो छः
केही बुँदा दिइएका छन्, मिलाएर दुई अनुच्छेदमा व्याख्या गर्नुहोस् है त । मान्छे मायाको भोको .....
Here, Weight = 294 N Acceleration due to gravity on earth (ae) = 9.8 m/s2 Mass = ? We know that, W = m ⨯ a Put the value together and solve .....
Mass is given as 50 kg.
Therefore, Weight = mass ⨯ acceleration = 50 kg ⨯ 9.8 m/s2
Weight = 490 kg.m/s2 = 490 N .....
The value of acceleration due to force in the polar regions is .....
If the mass doubles then simply the gravitational force gets 4 times.
Apply formula F=Gm1m2/r2
F’ = G (2m1 x 2m2)/r2
F’= .....
Here, We know, 22 + 23 = 45 Operating both sides by cot, we get cot(22 + 23) = cot45 Using formula of cot(A + B) & cot45 = 1, we get or, (cot22 . cot23 - 1) / ( cot22 + cot23) = 1 Now simplify and get .....
Here, LHS = cos20 - sin20 = cos(45 - 25) - sin( 45 - 25) Using formula of cos(A - B) & Sin(A - B), we get = cos45 cos25 + sin45 cos25 - sin45 cos25 + cos45 sin25 Now use cos45 = sin45 = 1/√2 and simplify to get .....
Residual soil Alluvial soil 1. If the products of rock weathering are still present at the place of origin, the soil is called residual soil. 1. If the soil has been transported away from its place of origin by .....
There exist many nations in the world. These nations each have their own language, culture, religion and traditions. Though each individual is distinct from another still we all are related to one another as we live in the same planet. Earth is .....
Metal used in making coins are as follows. a) Copper b) Silver c) Gold e) .....
व्याख्या दुई अनुच्छेदमा लेख्नुपर्छ । एउटा अनुच्छेमा व्याख्या गर्ने अनि अर्को अनुच्छेदमा .....
Nepal has given birth to many people with outstanding talent. We are always indebted to them for what they have done for the country. For their outstanding contributions to the nation, they are recognized as national figures of .....
King (Dr. Martin Luther King, Jr.) was born on January 15, 1929 in Atlanta, Georgia. Both his father and grandfather were Baptist had been actively involved in the civil rights movement. King graduated from Morehouse College in 1948. After .....
Firecrackers are deemed hazardous to health hence is banned by the .....
Here, LHS = sin70°sin130°sin170° = sin70°sin(180°-50o)sin(180°- 10o) = Sin 10 . Sin 50. Sin 70 [ Since, sin(180 - A) = sinA.] = Sin 10. 1/2 { Cos ( 50 - 70 ) - Cos ( 50 + 70 ) } =1/2 . Sin 10 ( Cos .....