Students and Teachers Forum
When the bus starts suddenly, then, the lower part of body starts being in motion because it is in touch of bus in motion, while the upper part of body tries to be at rest for sometime, because of inertia at rest. this is why, passengers tends to .....
This is due to the presence of inertia. When the bus moves, the passenger's body comes in the state of motion but when the bus stops the lower part of the body which is in contact with floor comes in the state of rest whereas the upper part of .....
There are three main categories of storage devices: optical, magnetic and semiconductor. The earliest of these was the magnetic device. Computer systems began with magnetic storage in the form of tapes (yes, just .....
Formula of the area of four walls, => (area of the base ) + (area of ceiling) => Area of base = l * b => Area of ceiling = l * b So, => (area of the base ) + (area of ceiling) = 2(l*b) => As per Surface area of a cuboid we have .....
Axioms of triangle is the procedue to make the given two triangles congurent. Some of the axioms are : - SAS axiom -ASA axiom - SSS axiom - RHS axiom - AAS .....
An object is said to have uniform velocity if it moves along a fixed direction and covers equal displacements in equal intervals of time. For a body moving with uniform velocity, there is no change in velocity and hence it has .....
Electric current is defined as the rate of flow of negative charges of the conductor. In other words, the continuous flow of electrons in an electric circuit is called an electric current. The .....
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 .....
In geometry, the area can be defined as the space occupied by a flat shape or the surface of an object. The area of a figure is the number of unit squares that cover the surface of a closed figure. Area is .....
The rate of change of distance is called speed. It is a scalar quantity. It's SI unit is .....
The distance travelled by sound in unit time is speed of sound. The speed of sound is different in different medium. The speed of sound in air is .....
Solution : distance travelled s = 200 m time t = 6 sec initial velocity u = 0 m/s final velocity v = ? accleration a = ? We know, and, s = ut + 1/2 * a * t2 or, 200 = 0 * 6 + 1/2 * a * 62 or, 200 = 0 + 18a or, a = 200/18 = 11.11 m/s2 and, .....
प्रश्नले मागेको कुरा प्रष्ट भएन त .....
Force is push or pull. Force is an external agent that changes or tends to change the state of body from rest or .....
An atom can be defined as the smallest constituent particle of an element which is independent of existence.
Example: Ne, O
A molecule can be defined as the combinations of two or more atoms which are held together by chemical .....
Community is a group of people living in the same place. A community has a particular characteristic in common. A community works as a bridge between the past and the present in the following ways: - It works to protect and promote the original .....
Solution : 6 m2 = ..... cm2 6 m2 = 6 m * m = 6 * 100 cm * 100 cm = 60000 .....
m4 + m2 + 1 = (m2)2 + (1)2 + m2 = (m2 + 1)2 - 2m2 + m2 = (m2 + 1 )2 - m2 = ( m2 + 1 - m ) ( m2 + 1 + m ) = ( m2 - m + 1 ) ( m2 + m + 1 .....
Gravity is a force which tries to pull two objects toward each other. Anything which has mass also has a gravitational pull. The more massive an object is, the stronger its gravitational pull .....
The rate of doing work is called power. Power is defined as work done per unit time. Its SI unit is .....
Barometer is a device used to measure atmospheric .....
Solution : CP of 12 fruits = Rs.225 CP of 40 fruits = 225/12 * 40 = Rs.750 SP of 40 fruits = ? loss % = 8% We know, loss % = (CP - SP)/CP * 100 or, 8 = (750 - SP) /750 * 100 or, 8/100 * 750 = 750 - SP or, 60 = 750 - SP or, SP = 750 - 60 = .....
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देवकुमारी थापाको कर्मशील जीवनबाट प्रभावित भएर उनलाई नागरिक अभिनन्दन गरियो .....
Dry ice is the solid form of carbon dioxide. It is used primarily as a cooling agent. A block of dry ice has a surface temperature of -109.3 degrees Fahrenheit (-78.5 degrees .....
Definitely, Nepal is a multi-ethnic, multi-cultural, multi-religious and multi-lingual country. In this small country, people of 125 castes live. They live in different geographical regions. These people speak 123 languages. Some languages that .....
व्यक्तिवाचक सर्वनाम र पुरुषवाचक सर्वनाम एउटै हो । यसका केही उदाहरण तल छन्ः म घर जान्छु । हामी .....
Now, let's talk about the necessity of skilled manpower for the development of the country. - The skilled manpower can face any challenges and address them while carrying out developmental activities. - They are equipped with updated .....
When you divide a block of a homogenous .....
The color of water is .....
Deoxygenated blood is the impure form of blood. It is the blood containing maximum amount of carbondioxide ( i.e blood without oxygen .....
Solution : Retardation is a vector quantity because ot has both magnitude and .....
We have seen that the nation that has a high literacy rate is more developed than those which are a very percent of illiterate people. It is the education which makes a country developed economically and technologically. Education plays a key role .....
In biology, binocular vision is a type of vision in which an animal having two eyes capable of facing the same direction to perceive a single three-dimensional image of its surroundings. What we see is the result of .....
Given, Force (F) = 300 N mass (m) = 10 kg acceleration (a) = ? We know, F = ma or, 300 = 10 x a So, a = 30 m/s2 Thus, the acceleration produced is 30 .....
To find the distance, we know that, v2 = u2 + 2as or, 0 = 252 + 2 ⨯ (- 5)s or, 0 = 625 - 10s or, 10s = 625 or, s = 625/10 or, s = 62.5 m Hence, the distance travelled by the vehicle is 62.5 .....
Solution : initial velocity u = 0 m/s final velocity v = 50 m/s distance s = 10 m acceleration a = ? We know, v2 = u2 + 2as or, 502 = 02 + 2*a*10 or, 2500 = 20a or, a = 125 m/s2 so, its acceleration is 125 .....
Solution : Initial velocity u = 20 m/s Final velocity v = 0 m/s distance s = 10 m retardation r = ? We know, v2 = u2 + 2as or, 02 = 202 + 2*a*10 or, -400 = 20a or, a = - 20 m/s2 i.e retardation is negative acceleration, so, retardation r = 20 .....
Solution : Initial Velocity u = 0 m/s distance travelled s = 100 m acceleration a = 20 m/s2 final velocity v = ? We know, v2 = u2 + 2as or, v2 = o2 + 2 * 20 * 100 or, v2 = 4000 or, v = 63.25 m/s So, its velocity after covering 100 m is 63.25 .....
National pride is love and devotion to one’s country. In a broad sense anything that develops the feeling of patriotism and respect towards the nation can be called as things/subjects of national pride. It reinforces the alliance of all .....
The Universe is a combination of matter and energy. Matter is a substance and energy is the mover of the .....
A lubricant is a substance that reduces friction, heat, and wear when introduced as a film between solid surfaces. Using the correct lubricant helps maximize the life of your bearings and .....
Solution : Square root of 468 = √468 = .....