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You may have learnt that distance is a scalar quantity and  displacement is a vector quantity. Distance is the magnitude of length.  Distance does not have any direction. However, displacement have both magnitude and direction. From .....

You may have learnt the formula to calculate the acceleration on a body. Acceleration = change in velocity                                 time The value of time is .....

As mentioned above, the formula to calculate momentum is momentum = mass × velocity Momentum is a derived quantity. So, its unit is also a derived unit. The unit of momentum is derived from the unit of mass and velocity. The SI unit .....

   यहाँ निबन्ध कसरी लेख्ने भन्नेबारे भनिएको छैन्, समाजिक न्याय शीर्षक दिएर सिधै निबन्ध रचना .....

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Here, the perimeter of the room (P) = 22m  And height of the room (h) = 4m We know that perimeter of the room (P) = 2(l + b) or, 22  = 2 x ( l +b) or, 22/2 = (l + b) or, (l + b) = 22/2  or, (l + b) = 11 m Again, we know .....

Here, the area of 4 walls of room = 88 m2 Height of the room (h) = 5 m Let, length of room = l  and breadth of room = b We know that, the area of four walls = 2 h ( l + b) or, 88 = 2 x 5 (l + b) or 88/10 = l + b or, l + b = 88/10 = 8.8 .....

You know,  area of four walls and ceiling = area of four walls + area of ceiling area of four walls = 4 × area of each wall and area of each wall = length × height of room and area of ceiling = length × .....

Here, the area of four walls and ceiling of a room = 96 sq. m. The area of four walls and ceiling excluding 1 door and 3 windows = 88.5 sq. m. Now, the area of 1 door and 3 windows =  the area of four walls and ceiling of a room - the area .....

You may have learnt that total cost of painting four walls and ceiling = area of four walls and ceiling × rate of painting per area ( or per square metre) According to question,  area of four walls and ceiling = 450 m2 rate of .....

Here, dimension of a rectangular room = 6m x 5m x 3m. So, Length of the room = 6m Breadth of the room (b) = 5m Height of the room (l) = 3m. The area of 4 walls = 2h(l+b)                     .....

Here, The room of size = 7 m x 6 m x 3 m. That means, Length of the room (l) = 7 m. Breadth of the room (b) = 6 m. Height of the room (h) = 3 m. Now, we know that area of four walls = 2h(l + b)               .....

You may have learnt that total cost of plastering four walls = total area of four walls × rate of plastering  According to question,  total cost of plastering walls = Rs. 2400 and rate of plastering = Rs. 20 per square .....

Here, Length of the room (l) = 10 m Breadth of the room (b) = 8m Let, height of the room = h The rate of plastering walls = Rs. 40 per square metre. Total cost of plastering four walls = Rs. 5400. Now, The area of four walls = (Total cost of .....

Here,  Height of a square room (h) = 3m. The rate of painting walls = Rs. 20 per square meter. Total cost of painting four walls = Rs. 1800.   So Area of four walls = (Total cost of painting four walls) / The rate of painting .....

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Let, First term of series = a. And common difference = d We know that the nth term = a + (n-1)d So, 4th term t4 = a + (4-1)d                     t4     = a + .....

You have learnt the formula to calculate the sum of n terms in arithmetic series. Sn = n/2 (a + l)  and you know,  l = a + (n - 1) d So,  Sn = n/2 {a + a + (n - 1)d}  or, Sn = n/2 {a + a + (n - 1) .....

You may have learnt to find the nth term of the arithmetic series (tn). i.e. tn = a + (n - 1) d where d is the common difference. If tn be the last term, then   tn = 90,  n = 30. Substituting the respective values, you will .....

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Krish, the name of four religious TV channels are as follows: Aastha Sanskar Peace of god Athmeeya .....

Brahma- god of creation Laxmi-goddess of wealth and wisdom Ganesh-remover of obstacle Durga-goddess of power Buddha-god of .....

The answer: Chance        - luck Magazine     - a book containing articles Sorrowful     -  feeling of sadness Community  - a social group Victim          - a .....

Finally, in January 1917 the Germans sent the Zimmerman Telegram to the government of Mexico. This offered "substantial aid" in regaining territory lost to USA during the Mexican-American War of 1846-1848 if Mexico attacked USA. Germany .....

Although the League of Nations was much of the work of President Woodrow Wilson .....

The League of Nations was an intergovernmental organisation founded on 10 January 1920 as a result of the Paris .....

Use value of 2a from (ii) to (i), we get -39d +19d = 5 or, d=-1/4. Put d in (ii) We get 2a =-39 x 1/4 or, a = -39/8. Hope you can complete it .....

TABLE FOR CALCULATION OF M.D.   Marks (x) No. of students (f) c.f. x - md / x - md/ f/ x - md/ =f/D/ 20 7 7 - .....

Here we need to find the sum of -15-5+5+...........+115 . Frist term =  a = - 15 common difference = d  = - 5 - ( -15) = 10  Last term = l = 115 We know, last term =  a + ( n - 1 ) d, where n be the no. of terms. or, .....

Here we need to find the sum of  7 +10 + 13 +16.............+67 Frist term =  a = 7 common difference = d  = 10 - 7 = 3 Last term = l = 67 We know, last term =  a + ( n - 1 ) d, where n be the no. of terms. or, .....

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The differences between the process of ageing and old age are presented in the table below:

To find HCF & LCM , we need to factorise them. 1st expression = x3 - 9x                        = x ( x2 - 9 )                  .....

Density is defined as the mass of an object per unit volume. From the definition, Density (d) = m                        v                   .....

Measuring instruments may get damaged due to corrosion. This cause error in the measurement of a physical quantity and  this interrupts the uniformity in measurement. To prevent such conditions, it is important to have regular .....

For example,  Cellular reproduction requires multiple steps. Before it can reproduce, a cell needs to split its DNA into two parts. After doing so, cells pull apart at their centers and become two cells in the end. Each of the resulting .....

They are: 1. Systemic circulation: It is the circulation of oxygenated (pure) blood from heart to all the body parts through arteries and deoxygenated blood (impure)  from body parts to heart through veins.  2. Pulmonary .....

The coil, attached to the diaphragm, moves back and forth as well. The permanent magnet produces a magnetic field that cuts through the coil. As the coil moves back and forth through the magnetic field, an electric curent flows .....

पहिला त म के भन्न चन्छु भने सामाजिक र सान्स्कृतिक पक्षलेनै हाम्रो समजको मुल्य र मान्यतलाई .....

(a + b) 2 = a 2 + 2ab + b 2                 Square of a Sum (a − b) 2 = a 2 − 2ab + b 2                 Square of a Difference a 2 − b 2 = .....

आनन्द्, जन्स्ंख्या बृद्का थुप्रै नकरत्मक आसरहरु छन । जन्स्ंख्याबृदी भयोभने थुप्रै आर्थिक र .....

Thermometer is constructed based on the principle of thermal .....

वातावरण हामी सबैको साझा बासस्थान हो, जहाँबाट हामी आफ्ना आधारभूत आवश्यकताहरु प्राप्त गर्छौं .....