Students and Teachers Forum
Our early human ancestors looked like a cross between apes and modern humans. They even had lots of stone tools with sharp edges. It was a very stressful life because they were in continual competition with carnivores for their food. They .....
Consider the two bodies of the mass M1 and M2with force F acting between them towards their centre.
If the distance between their centers is d then,
According to Newton’s universal law of .....
CPU stands for "Central Processing Unit." The CPU is the primary component of a computer that processes instructions. It runs the operating system and applications, constantly receiving imput from the user or active software .....
Transpiration is the process where plants absorb water through the roots and then give off water vapor through pores in their leaves. .....
Solution : radius of a wheel r = 40 cm circumference C = ? distance covered in 200 revolutions D = ? We know, C = 2πr = 2 * 22/7 * 40 = 251.42 cm D = 200 * C = 200 * 251.42 = 50,285.71 .....
Solution : Circumference C = 440 cm Diameter d = ? We know, C = 2πr or, 440 = 2πr or, r = 440 / 2π = 70 cm so, diameter d = 2r = 2 * 70 = 140 .....
Solution : Circumference C = 22 cm or, 2 π r = 22 or, 2 * 22/7 * r = 22 or, r = 7 / 2 = 3.5 cm So, the radius is 3.5 .....
Jupiter is the largest planet in our Solar System with the most mass. Because of Jupiter’s mass, you would weigh more on that planet than on any other one in our Solar System. If you weighed 68 kg on Earth then you would weigh 160.7 kg on .....
Reverberation is the reflection of sound waves created by the superposition of such .....
सपनामा खोले खाएको भनेको यही होः पूरा नहुने कुरा हुन्छ भनेर जबरजस्ती गर्न .....
Society is a group of people living together within a certain territory. Being humans, we are always inclined to live an advanced and civilized life. To reach the ultimate peak of quality of life we should carry out as many developmental .....
Here. x + 45° = 180° { being linear pair } or, x = 180° - 45° or, x = .....
2 NaOH (s) + CO2 (g) →Na2CO3 (aq) + H2O (l) Sodium carbonate is the byproduct of the .....
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Speed of the satellite is constant.
However, its direction is constantly changing, as seen in the diagram below. At the west side of its orbit, the direction of the satellite is upwards. At the north of its orbit, the direction .....
To measure the diameter of a sphere, we use this formula. Diameter of a sphere: d = 2 ⨯ r Where, d = diameter r = .....
The fishes changes their body tempeture according to the temperature of the surrounding water. They do not have fixed temperature of body. They are cold blooded animals. Cold blooded animals are those which can not .....
Solution : For rectangular room, length l = 8 m breadth b = 6 m Area A = l * b = 8 * 6 = 48 m2 For a carpet , breadth b = 3 m length l = ? Area a = l * b = 3 l And, area of rectangular room = area of carpet or, 48 = 3 l or, l = 16 m so, .....
Another word for Ascheleminthes is Nematoda .....
Very large number is usually expressed in the power of ten like speed of light (c) = 3 x108m/s Similarly very small numbers are also written in power of ten like Gravitational constant (G) =6.67x 10-11Nm2kg-2. Expressing them in terms of power .....
आज, बिहानः अव्यय .....
Your figure is missing. Please repost .....
We also know that decimals can be considered as fractions whose denominators are 10, 100, 1000, etc. The numbers expressed in the decimal form are called decimal numbers or decimals. For example: 5.1, .....
It's dangerous to jump off a runing vehicle because your body will be moving at the same velocity as the vehicle, so when you jump, your body will continue in the direction of the vehicle. But when your feet touches the ground the .....
The human society went through a series of stages during its evolutio. Some of the differences between early society and present society arte: Early humans were hunters and gatherers while today's people are farmers or/and bussiness .....
Energy shortage can be reduced in the following ways: - The generated hydroelectricity should be supplied effectively. - The leakage during supply should be checked and punishment should be given to the corruptors. - The alternative source of .....
Solution : 5+35 = .....
क) समयको झरी भनेको कठोर पीडादायी समय हो .....
Peroxides are a group of compounds with the structure R−O−O−R. Peroxide is
Iron + Oxygen --- Ferric oxide 4Fe + 3O2 → .....
Area is the size of a surface. The amount of space inside the boundary of a flat (2-dimensional) object such as a triangle or circle, or surface of a solid (3-dimensional) object is its .....
आँप, आँखा, आँगन, छायाँ, दायाँ, बायाँ .....
My school is near my village so many of my classmates are from my .....
Solution: Commission amount = Rs.558 Commission rate = 3.1% Sales amount S= ? We know, Commission amount = Commission rate of sales .....
Parallel universe is theory which suggests that there could be other universes besides our own, where there is life like in our planet. Till now there are no proof of any parallel .....
1st expression 16a4 - 4a2 + 4a - 1 = 16a4 - (4a2 - 4a + 1 ) = (4a2)2 - [(2a)2 - 2.2a.1 + (1)2 ] = (4a2)2 - (2a -1)2 = ( 4a2 + 2a - 1) ( 4a2 - 2a + 1) 2nd expression 8a3 + 1 = (2a)3 + (1)3 = ( 2a + 1 ) ( 4a2 - 2a + 1 ) So, HCF = ( 4a2 .....
Development is a life-long process. It never stops and is always seeking ways and means to improve itself. Humans always seek to improve themselves through positive and progressive changes. In the earlier days, there were practices of .....
The swim bladder is located in the body cavity and is derived from an outpocketing of the digestive tube. It contains gas (usually oxygen) and functions as a hydrostatic, or ballast, organ, enabling the .....
A pair of external ears called pinna is present in .....