Students and Teachers Forum
Here the line of a+b = 1 and 2a-b = -1 intersect at (3,7) . So, a = 3 and b = .....
Solution: Let the coordinates of the circumcentre of the triangle be (x, y). Circumcentre of a triangle is equidistant from each of the vertices. Distance between (8, 6) and (x, y) = Distance between (8, -2) and (x, y) or,√[(x - 8)2 + .....
Different beautiful flower, birds, shrubs and trees make Godawari .....
Do you have a dog or a cat at home? Domestic animals are those that can been tamed and kept by human beings Have you heard of a Guinea pig? This is also a domestic .....
The study of popualtion according to its characteristics helps us in following ways: This helps us know about different information and details related to different groups of people. Such minute study of the population helps us learn about .....
We know that unhealthy food harms our health. Therefore, we need to be safe from unhealthy food. To be safe from unhealthy food we need to be aware of the consumer rights. For me, I do prevent myself from the unhealthy food through the ideas .....
We know, W = mgh = 20 x 10 x 20 = 4000 J Therefore, energy stored is 4000 .....
Food adulteration refers to the mixing of illegal or harmful substances or materials to food items. In other words, if food product fails to meet legal standards that is what we call food adulteration. Food adulteration is a burning problem. It .....
Here, tn-1 =3t n -1 and t1=2 Put, n = 2, t2-1 =3t 2 -1 or, 2 = 3 t2 - 1 or, t2 = 1 Again ,Put, n = 3, t3-1 =3t 3 -1 or, 1 = 3 t3 - 1 or, t3 = 2/3 Put, n =4, t4-1 .....
Well, food adulteration is a burning problem. It is one of the main problems of the present day world. As the population of the world is growing a tremendous rate, the need for good quality and nutritious food is also rising. Most of the people .....
We know, MA = L / E = 1000 / 400 = 2.5 VR = l / h = l / 2 η = (MA x 100) / VR or 80 / 100 = 2.5 / (l / 2) on solving these, we get, So, l = 6.25 m Therefore, the minimum length of the inclined plane should be 6.25 .....
Here, 1 . ∆AOP ≌ ∆BOR [ ASA axiom, <APO = < ORB, OP = OR, <POA = < ROB] 2 . ∆POS ≌ ∆ROQ [ SSS axiom, PS = QR, .....
VR of pulley is defined as the number of rope segments that supports the load except the single fixed .....
There are 2,532 species of vascular plants represented by 1,034 genera and 199 families in the protected .....
We cannot avoid disasters or calamities but we can minimize them by: 1. Disaster mitigation - Structural and non-structural measures undertaken to limit the adverse impact of natural hazards. For example, planting mangroves to reduce the risk .....
Here, cos2x = 3sin2x + 4 cosx or, cos2x = 3( 1 - cos2x) + 4 cosx or, 4cos2x - 4cosx - 3 = 0 or, 4cos2x - 6cosx + 2cosx - 3 = 0 or, 2cosx( 2cosx - 3) + 1( 2cosx - 3) = 0 or, ( 2cosx - 3) ( 2cosx +1) = 0 Either, 2cosx - 3 = 0 ==. cosx .....
Bhuvan Pathak 5th, March, 2018
We have, k.e. = 1/2 mv2 = 1/2 x 4 x 102 So, k.e. = 200 J Thus, kinetic energy of the iron ball is 200 .....
sin6(a) + cos6(a) =[ sin2(a)]3 +[ cos2(a) ]3 , Now usinf formula of a3 + b3. = (sin2(a) + cos2(a)) (sin4(a) - sin2(a) cos2(a) + .....
2y - 3y = y + 2 or, -y = y + 2 or, - y - y = 2 or - 2y = 2 or, y = 2 ÷(- 2 ) Therefore, y = - .....
2. Ans Friction reduces the efficiency of a simple .....
Solution: LHS = tanx / [ secx - 1] - sinx / [ 1 + cosx] = tanx/ [ 1 / cosx - 1 ] - sinx / [ 1 + cosx] = ( sinx / cosx) / [1 - cosx] / cosx - sinx / [ 1 + cosx] = sinx / [ 1 - cosx] - sinx / [ 1 + cosx] = [ sinx( 1 + cosx) - .....
You mean course as "food" or course as .....
The differences are: Mechanical Wave .....
But too much friction causes a heavy loss of energy, tear and wear of the machinery. Thus the efficiency of the machine will decrease tremendously. This tear and wear increases the maintenance cost of the things. Hence, it is rightly said that .....
1 volt potential difference is defined as the difference in potential between two points in a current carrying conductor when 1 joule of work is done to move 1 coulomb of charge from one point to another. We know, Potential difference = Work done .....
Look at the example below. Ram is a good boy. He is very .....
Here, Join Q and S. 1.▲PQT=▲PQS ( triangles on same base and same parrelles PQ and TS. 2.▲PQU+▲PUT=▲PQU+▲QUS (Whole part axioms) and cancel the common triangles on both .....
1. Soaps 2. Candles 3. Beauty products 4. Spice mixes 5. Sauces 6. Dairy products 7. Jams and Jellies 8. Baked goods 9. Gardening supplies 10. Craft .....
No. Here, Power (P) = Work done (W) / Time (t) We are saying the workdone is same but time is different, then, For 1st man, say A Work done (W) = w Time (t) = 5 sec (suppose) P A = w / 5 For 2ndman, say B Work done (W) = w ( workdone .....
No, it is not possible to have efficiency of machine 100% because machines are not frictionless in real life. Due to presence of frictional force, it reduces efficiency of the .....
Wheel and axle is known as simple machine because of the following reasons:- 1. It makes our life run easier and faster. 2. It helps to multiply effort applied. 3. It helps to change the direction of force in convenient .....
Suppose, you have a electrically charge circuit. You take any two points in the circuit and measure the potental between these two points. The resulting difference in potential in a electrically charged circuit is called potential difference. You .....
Solution: Here, (4x - 1) (x + 2) = 2 + 7x or, 4x2 + 8 - x - 2 = 2 + 7x or, 4x2 - x - 7x + 6 - 2 = 0 or, 4x2 - 8x + 4 = 0 or, 4[ x2 - 2x + 1] = 0 or, x2 - 2x + 1 = 0 or, x2 - 2.x.1 + 12 = 0 or, ( x - .....
The population of different places is different. This is due to unequal distribution of population. There are few factors that determine the distribution of population. The push and pull factors play essential role during distribution of .....
तीन .....
Discipline is abstract. Discipline is the controlled and ordered behaviour. In the 2nd para, list out places where discipline is a must and how it benefits someone. school, college, office, temple, bus, plane--everywhere, it endears anyone to .....
My town is the capital city of our country Nepal that is Kathmandu. Kathmandu is situated in a beautiful valley in the central region of Nepal. It is the only metropolitan city in our country and surrounded by beautiful hills. It is a highly .....
प्रश्नले भन्न खोजेको कुरा प्रष्ट भएन त साथी .....
Clinical thermometer is the thermometer which has kink in it and usually used in clinics or doctors to measure human body temperaure which has temperature range from 35oC to 45oC. Here is the figure of clinical .....