विश्व व्यापीकरणले  संसार साघुरो बनाएको छ । जहाँ जे भए पनि एक छिनमै विश्व भरी थाहा पाउन .....

Here, given, Dimensions of water tank = 3 m × 2 m × 2 m length = 3m breadth = 2m height = 2m density of water (d)= 1000 kg/m3 acceleration due to gravity (g) = 9. 8 m/s2 Since, the tank is half filled, the height of the liquid (h) .....

You know the sun is the brightest object we see in the sky.  It is the largest member of our solar system.  In fact, the sun is a star.  It is only the star in the solar system.  It has its own heat and light. It is the main .....

Wright brothers; Orville and Wilbur invented an .....

it is the property of a substance that enables it to change its .....

Here, the given quadratic equation is, 4x2 - 3k x + 1 = 0 You might have learnt that,  The general expression for quadratic equation is, ax2 + bx + c = 0 Comparing the given expression with the general term, we get, a = 4, b = -3k and c = .....

The Sun is a star.  Earth is a planet that revolves around the Sun in a fixed elliptical orbit. Similarly, the Moon is a satellite. The Moon revolves around the .....

The energy found in food, burning match-stick, dry cells etc is chemical energy. Magnetic energy is the energy found in magnet. The nuclear energy is produced when nuclei fuses or .....

Please post the questions one by .....

It states that energy can be neither be created nor be destroyed. It means new energy can't be created  nor can existing energy be destroyed. We can only transform energy from one form to another .....

Chemical equations need to be balanced in order to satisfy the law of conservation of matter, which states that in a closed system matter is neither created nor destroyed. Lets consider an .....

An individual series is a raw data form. It gives numeric values for specific .....

LHS = x sinA + y cosA Now, put the value of sinA and cosA. You will get the .....

वर्षा कविता महाकवी देवकोटाले लेखेका हुन् ।  यस कवितामा वर्षाको कलात्मक वर्णन गरिएको छ .....

क. मानिसका अविवेकी क्रियाकलापले वातावरणमा विकृति आउँछ । वातावरण विकृत भयो भने .....

If you have visited in the long distance you can see some small house like places with single roof and some benches in the middle of your ways.  People make such places to rest for the walkers.  These places are called pari .....

 Enterpreneurship education delivers the right skills for the labour market and the growth of entrepreneurship, while delivering support to young people to secure their economic future and enable businesses to grow and create new jobs. So, it .....

Subtract 898 from 8095 you will get the number of pens .....

Look at this picture.  Here are three small pigs. They are the babies of a pig. We call them as "piglets".  A single baby is called a .....

वातावरण र प्रकृतिको संरक्षण कसरी गर्न सकिन्छ .....

विज्ञान भनेको नयाँ कुराको खोजी हो जसले मानिसलाई हरेक काममा सहजता ल्याइदिन्छ .....

In addition to these, she was the first First Lady to hold all-female press conferences. She wrote on many issues including the space program, women's rights, television and many other areas. She joined in Red Cross Society during World War I .....

The meaning of wobble is .....

Voting right is one of the important rights of a citizen. It is the beauty of democracy. People can select their representatives by exercising their voting rights. So, we should suggest our parents the following things regarding .....

He was a activist who revolted against Panchayat. He was born on 2007, in Ilam He was shot dead in Ibang, Nepal For fighting against Panchayat. Hence, he is remebered as communist .....

Ozone लाई O3 नामले पनि चिनिन्छ । यो हाम्रो पृथ्वीको सतह भन्दा १० देखी १७ किलोमिटर माथी रहेको .....

Please send the clear .....

Let me help you. They are Ronaldo, Neymar, Messi, Ryan .....

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स्थानीयकरण भनेको स्थानीय स्तरमा उत्पादन गरेर त्यहीँ उपयोग गर्नु भन्ने बुझिन्छ .....

Flowering plants are divided into monocots (or monocotyledons) and dicots(or dicotyledons). As the name suggests, the dicot embryo has two cotyledons. Monocotyledons have one cotyledon in the embryo. Examples of monocots include: maize, rice, .....

It is a democratic system of governance. Generally, the sovereign power is vested in the people. There is elected prime minister in this system. The rights, voices, and choices of the general people are respected and addressed. The .....

Oxygen can be prepared in lab by heating potassium chlorate. KClO3→ KCl + .....

Here, LHS = Sin3A/SinA - Cos3A/CosA You might have learnt that, sin3A = 3sinA - 4 sin3A cos3A = 4 cos3A - 3 cosA Use above formulas in LHS. After simplification, you will get .....

वर्षा ॠतु कोमलताको प्रतीक हो ।   शुष्क बनेको प्रकृतिलाई सर्वाङ्ग भिजाएर अनेक जीव जन्तु र .....

Here, LHS = 1 - Tan²(45 - A) / 1+Tan²(45 - A) RHS = sin2A You might have learnt that, cos2X = (1 - tan2X)/ (1 + tan2X) Now, look at the LHS. LHS is in the form of cos2X where, X = 45 - A. Now, using the formula, we get, LHS .....

No, each elements are different from each other. They are composed of different number of atoms. And atoms of each element are dissimilar to each .....

Please recheck the question, The question should be, Cos2(45 - A) - Sin2(45 - A)=Sin2A Here, LHS = Cos2(45 - A) - Sin2(45 - A) You might have learnt that, cos2A = cos2A - sin2A Here, LHS is in above form. Hence, using above formula, we .....

Okay, I will give you the solution. Try to understand. LHS = cotA - tanA           = cosA/sinA - sinA/cosA                   Now, taking LCM, we get,     .....

Suppose, you tossed a coin, The chance is any of the event can occur, i.e. either head or tail But, one condition is sure to happen, i.e. if the head is the outcome, the tail would not occur or, if the tail is the outcome, the head would not .....

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HCl and H2O are polar .....

Rana rule was considered one of the darkest period of the .....

Weight is directly proportional to value of acceleration due to gravity as W = mg. Also, value of acceleration due to gravity is inversely proportional to radius of the planet i.e. the Earth. Hence , the weight of the object is inversely .....

Kangaroos possess powerful hind legs, a long, strong tail, and small front legs. Kangaroos belong to the animal family Macropus, literally "big foot." Thanks to their large feet, kangaroos can leap some 30 feet (9 meters) in a single .....

But, insect-eating animals flesh-eating animals depend on other animals for food.  They hunt the other animals and eat them. They are carnivorous animals. Lion, tiger, fox, wolf, snake, eagle are carnivorous animals. Can you tell some more .....

Look at this example carefully. Present-Radha goes to the market. Past- Radha went to the market. Future-Radha will go to the .....

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The value of acceleration due to gravity is given by, g = GM/R2 From the above relation, we can say that the value of acceleration due to gravity is directly proportional mass of the planet and inversely proportional to radius of .....

The process of chemical change is called as chemical reaction. The molecular representation of chemical reaction is chemical equation. Example: When hydrogen and oxygen reacts with each-other, water is produced. Hydrogen + Oxygen → .....