Students and Teachers Forum
Hertz (abbreviated: Hz) is the standard unit of measurement used for measuring frequency. Since frequency is measured in cycles per second, one hertz equals one cycle per second. Hertz is reciprocal .....
Inclined planes can wrap around an object, such as a mountain. When a road gently slopes up around a mountain, the driving distance increases, but less power from the engine is needed to get the car to the top of the mountain. Just as the inclined .....
The binary division is much easier than the decimal division when you remember the following division rules. The 3 main rules of the binary division include:
1÷1 = 1 1÷0 = 0 0÷1 = Meaningless 0÷0 = .....Solution : 9 3 * 52 = .....
We know that after agriculture, tourism is the major economic activity of most of the Nepalese. Nepal's high Himalayan peaks, rapidly flowing river and her traditional arts and architecture are the major sources of attraction for many .....
Solution, C.P of 5 pens = Rs 200 S.P of 3 pens = Rs 135 S.P of 1 pen = Rs 135 / 3 = Rs 45 S.P of remaining 2 pens = Rs 45 * 2 .....
Since Pressure P = Force applied F / Area A So, pressure is directly proportional to force applied and, inversely propertional to the surface .....
Solution : Let two numbers be x and y first condition : x - y = 4 or, x = y + 4 ...... a 2nd condition : x2 + y 2 = 208 or, (y + 4 )2 + y2 = 208 or, y2 + 8y + 16 + y2 = 208 or, 2y2 + 8y + .....
Kale is a green, leafy, cruciferous vegetable that is rich in nutrients. It may offer a range of health benefits for the whole .....
A society may be defined as group of people who have a common social and cultural norms developed by themselves for peace and harmony. The society especially comprises of people from various ethnic, lingual and religious groups. They may have .....
There are three equations of motions
First: v = u+at
Second: s = ut + 1/2(a)()
Third:
Where v = final velocity, u = initial velocity, a = acceleration, t= time taken, s= distance .....
Solution : initial velocity u distance covered s acceleration a and final velocity v then relation between them : v2 = u2 + .....
Environment is the place where we live. Environmental conservation is important for many reasons, including protecting the ozone layer, maintaining animal and human food chains, preserving potable water and making efficient use of non-renewable .....
People who live right next to us in the same locality is known as neighbors. Neighbours are like our friends. They help us in difficulties. They support us to make our life better. Neighbours are like our family members. If we are away from .....
The inverse function of f (x) : y = x Its inverse is same ie. F(x) = y so, for, F(1) = 1 F (2) = 2 F(3) = .....
The speed of sound is less than the speed of light. Speed of sound in different substances are .....
Square root of 825 = √825 = √ (3*5*5*11) = √(33 * 52 ) = .....
Chihuahua is a very small dog of a smooth-haired large-eyed breed originating in .....
21st June is the longest day and it marks the shortest night in the northern hemisphere. December 21 is the shortest day of the year for the Northern .....
we know that gravitational force =GMm/r^2 where G is universal gravitational constant , M is mass of object 1(here lets take earth's mass) m is mass of object 2 r is distance between two objects and when we go closer to the earths surface the .....
Shadows are produced when light hits an opaque object which prevents the light beams from passing through. When an object blocks the light's path, then darkness appears on the other side. This .....
The outermost part of sun is called .....
Any activities that bring about positive changes may be defined as development. Indeed, development is a universal process as no society can exist and develop in separation. One society is connected to various other societies spread across the .....
Social interaction may be defined as the reciprocal activity of an individual or community during social encounter. In other words, it may be defined as the type of behaviour expressed by an individual while interacting with other members of the .....
The income in which tax is not enforced is called tax free income. Suppose if your yearly income is Rs. 100000 . And, if there is provision of tax for yearly income upto Rs.80000 Then. Rs.80000 is tax free .....
Ammonium chloride is a neutral salt but its solution is slightly acidic because ammonium ion (
Solution : f (x) = 5x - 1 or, y = 5x - 1 Interchanging x and y, we get, x = 5y - 1 or, 5y = x +1 or, y = (x+1) / 5 so, f-1 (x) = .....
A dialogue between two friends about the features of the development of society with examples is prepared below:
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 .....
A breadth is the distance or measurement from side to side of something; .....
Solution : Square root of 10000 = √10000 = √ (10*10*10*10) = √ (102 * 102 ) = (10*10) = .....
Any two useful insects are : Honey bee because it produces honey which contains many nutrients that are required by our body. Silkworm because it produces silk which is used to make .....
The person who gives us birth and raises us are our parents. Our father and mother are our .....
A parasite is an organism that lives in another organism, called the host, and often harms it. It depends on its host for survival. Parasites are harmful because they causes infection inside the body of .....
The Terai region lies from the Chure range in the north to the borders of India in the South. It covers 17% of the total land. The climate is tropical here and life is more comfortable. The altitude varies from 300 meters to 600 meters above sea .....
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda. The members are known as molluscs or mollusks. Around 85,000 extant species of molluscs are recognized. .....
Ebola virus disease (EVD) is a rare but severe, often fatal illness in humans. The virus is transmitted to people from wild animals and spreads in the human population through human-to-human transmission. The average EVD case fatality rate is .....
Soil erosion is the natural process in which the topsoil of a field is carried away by physical sources such as wind and water. Clearing the vegetation, excessive grazing, disturb the ground, or allow the ground to dry are activities that increase .....
Sati system was considered as a social evil.In which a widow sacrifices herself by sitting a top her deceased husband's funeral pyre. The Sati system was legally abolished by Prime minister Chandra Shumsher Rana in .....
Solution: Final velocity v = 0 m/s acceleration a = - 4 ms-2 time t = 5 sec we know, v = u + at or, 0 = u + (-4) * 5 so, u = 20 m/s Then, S = ut + 1/2 * a* t2 or, s = 20*5 + 1/2 * -4 * 52 or, S = 100 - 50 = 50 m The distance travelled .....
Some of the differences between imperialism and colonialism are: Colonialism assumes the direct cotrol over other lands while imperialism assumes direct of indirect control in colonialism there is forced movement of people to occupied territory .....
The United Nations Mission in Nepal (UNMIN) was established to help the peace process in Nepal. The UNMIN, the political mission was established on 23rd January 2007 A.D. under the leadership of Mr. Ian Martin. It stayed and helped Nepal for 4 .....
When we say an object has a certain velocity, then this velocity is with respect to some frame that is known as the reference frame. In everyday life, when we measure the velocity of an object, the reference frame is taken to be the ground or .....
Density is the ratio of mass and volume. Its SI unit is Kgm-3 And mass is a fundamental quantity with unit Kg and volume is a derived quantity with unit m3 So, unit of density is derived beacuse it is formed by combining unit of fundamental .....
Kathmandu lies in hilly region and Ithari lies in terai. so, kathmandu is at higher .....
Velocity ratio is also defined as the ratio of a distance through which any part of a machine moves, to that which the driving part moves during the same time.” Velocity ratio can be calculated using fomula : VR = .....