Students and Teachers Forum

It means that Ram has the power to do 550 joules of work in 1 .....

Stone at the top of the hill possess potential energy. When it moves or falls its potential energy gradually transfers to kinetic .....

 When a receptor is stimulated, it sends a signal to the central nervous system, where the brain co-ordinates the response.  But sometimes a very quick response is needed, one that does not need the involvement of the brain. This is .....

Although sun is continuously pulling all planets and satellites but they don't fall over it because: - gravitational force (towards the centre) is balanced by the centrifugal force (away from the centre). - Planets and satellites move very .....

Nepal is a country of natural beauty. It is full of natural resources and has a huge prospect of the tourism industry. Geographical diversity, socio-economic and cultural diversity are the key attractions to tourism industry. But, the .....

Let P(x,y) be the coordinate of the moving point. According to question, mPA = nPB Squaring both sides, we get      m2[PA2]  = n2[PB2] or, m[(a - x)2 + (0 - y)2]= n2[(a + x)2 + (0 - y)2]    .....

Nepal is a country with natural and cultural beauty. Nepal is known as a prime destination for tourists due to its natural beauty, unique culture, and cultural heritage.  Due to this, Nepal has many probable aspects of tourism industry. The .....

Here, We have given, ( - a - x)2 Taking - common, = [ - ( a + x)]2 = (-)2 ( a + x)2 = ( a + x)2        [ Since, square of - is +.] Can you expand it by using formula ( a + b)2 = a2 + 2ab + .....

Plants are called producers because they are able to use light energy from the sun to produce food (sugar) from carbon dioxide and water.  Animals cannot make their own food so they must eat plants and/or .....

You know that many Nepalese youths have gone to different countries for foreign employment. The work there and earn money. They send the money to their home country. The money they send to their home country is what we call remittance. In .....

Arrange the given data is ascending order,  12, 12, 15, 18, 18, 25,32, 32, 33, 33, 35, 38, 39, 40, 43, 45, 46, 51, 57, 59.   Table for calculation of Q3.    Marks (C.I.) No.of .....

Here,  Arranging in ascending order: 21, 22, 32, 32, 35,38, 39, 40, 43, 45, 46, 51, 51, 52, 57, 59, 60, 63, 63, 79 Let's make a frequency table:   Marks obtained Frequency .....

Here, Wehave given c.f. table so we have to make frequency table. Table for Q1     Marks (x)  No.of dtudents(f) c.f. 0-20 12 12 20-40 15 - 12 =3 15 40-60 26 - 15 = .....

Distance between the sun and earth is .....

Here,    Marks obtained No. of students (f) cf 0-15 8 8 15-30 6 14 30-45 12 26 45-60 15 41 60-75 7 48 N = 48 Now,  Position of .....

In 2 days, Shyam can do 1 ∕ 5 part of piece of work. In 1 day, Shyam can do 1 ∕ ( 5∗2) part of piece of work. In 1 day, Shyam can do 1 ∕  10 part of piece of work. In 3 days, Shyam can do 3 ∕  10 part of .....

Here,  Table for Q1     Weight (x)  No.of .....

Here, X+1÷2=4÷3 or, X+1/2=4/3 or, (2X+1)/2=4/3 or, 6x + 3 = 8 or, x = .....

Here, Wehave given c.f. table so we have to make frequenvy table. Table for Q1     Marks (x)  No.of dtudents(f) c.f. 20-30 5 5 30-40 9 - 5 =4 9 40-50 14 - 9 = .....

Here,  Table for calculation of   Lower Quartile   Wages(x) No.of workers (f) c.f. 100 - 200  4  4 200 - 300  9  13 300 - .....

Here,  Table for calculation of   Lower Quartile   Wages(x) No.of workers (f) c.f. 50 - 65  7  7 65 - 80  3  10 80 - .....

Here, a) 2x/3 = 4/6 or, 12x = 12 so, x = 1 b) x - 1/4 = 3 or, (4x - 1)/4 = 3    [take LCM = 4] or, 4x - 1 = 12 or, x = .....

Here,    Marks obtained No.of students (f) cf 10-20 4 4 20-30 5 9 30-40 10 19 40-50 8 27 50-60 7 34 60-70 6 40 N = .....

Here,   Marks obtained No.of students (f) cf 10-20 2 2 20-30 5 7 30-40 7 14 40-50 6 20 50-60 3 23 60-70 2 25 N = .....

Here,   Marks obtained f cf 10-20 4 4 20-30 6 10 30-40 15 25 40-50 p 25+ p 50-60 5 30 + p Median = 40 so, Median class = 30-40 Median = L + {(N/2 .....

Could you see the sample below, .....

Here,   x f cf 5-15 5 5 15-25 8 13 25-35 10 23 35-45 9 32 45-55 11 43 55-65 1 44  N = 44 Median position = (N/2)th .....

Here, LHS = sinA/(1 + cosA) + sinA/(1- cosA)            =  (sinA - sinAcosA + sinA + sinAcosA)/(1-cos2A)             Take LCM (1 + .....

Here, LHS = tanθ/(secθ - 1) - sinθ/(1 + c/osθ) Put tanθ = sinθ/cosθ and secθ = 1/cosθ Then do simplify you will get, LHS = {sinθ/(1- cosθ)}   -   {sinθ/(1 .....

Here, LHS = cos2A/(1-tanA)+⁡sin2A/(1-cotA)         = cos2A/(1-sinA/cosA)+⁡sin2A/(1- cosA/sinA) [Since, tan = sin/cos & cot = cos/sin.]        = cos3A/(cosA - sinA) + sin3A/(sinA - .....

Please post the question .....

Diploid chromosome Haploid Chromosome 1. Diploid cells contain two complete sets (2n) of chromosomes. 1. Haploid cells have half the number of chromosomes (n) as diploid - i.e. a haploid cell contains only one .....

Hello Sarik, please mention the question number to be get .....

Here,   Marks obtained f cf 0-10 5 5 10-20 12 17 20-30 30 47 30-40 10 57 40-50 8 65 50-60 5 70 N = 70 Median position = (N/2)th .....

Here,   Class frequency (f) cf 0-30 5 5 30-60 10 15 60-90 22 37 90-120 25 62 120-150 14 76 150-180 4 80 N = 80 Median position = .....

Here, We need to find sum of  4+7+10+.........Till 12 terms a = 4,  d = 7 - 4 = 3 n = 12 S12 = ? We know,  Sn = n/2 [ 2a + (n - 1)d]      = 12/2 [ 2 ⨯4 + ( 12- 1)3]      = 6 .....

Here,   Wages No. of workers (f) cf 50-60 8 8 60-70 11 19 70-80 10 29 80-90 6 35 90-100 3 38 N = 38 Median position = (N/2)th .....

Here,   Marks obtained No. of students(f) cf 10-20 4 4 20-30 6 10 30-40 10 20 40-50 7 27 50-60 3 30 Median position = (N/2)th .....

Potential energy to kinetic .....

Potential energy to kinetic .....

Potential energy to kinetic .....

Potential energy to Kinetic .....

Please post your .....

Chemical potential energy to kinetic .....

Light energy is being converted to chemical potential .....

This electrical energy is converted into heat and .....

Firstly, convert the given mixed fraction into improper fraction.   347 = 3×7+47 = 257 Now, divide 25 by 7 to get decimal number.   257 = .....

Post your .....

Field reports are generally produced as a bridge between the theoretical concept and the practical approach. The field reports facilitate the development of data collection techniques and observation skills.   They also help you to understand .....

Here, LHS = 1/(1 - cosθ)   +   1/(1+ cosθ)            =   (1 - cosθ +1 + cosθ)/ (1 - cos2θ)   [taking .....