Students and Teachers Forum
Can you tell me, which of .....
Today is sunny day. Yesterday it was rainy. Tomorrow it may be cloudy. The condition of the atmosphere changes from time to time. The change in the condition of atmosphere is known as .....
John Logie .....
Is n(AUB)=n(U)? If so use formula, n(AUB)=n(A)+n(B)-n(A∩B) And get the .....
You might have learnt about collids A colloid is a mixture in which that contains tiny, undissolved particles that do not settle out. A colloid is defined by the size of the particles involved. A colloid contains larger particles .....
Here to prove this question we must take LHS and must know formula. I hope you know all the formulae of trigonometry. LHS=sin420cos390+cos(-660)sin(-330) = sin[360+60] cos[360+30]-cos660 sin330 .....
Answer: The work done by the machine is called output work. Explanation: In the figure, When effort is applied to lift the weight using pulley, the applied force is input work. Lifting the pulley is output .....
You might have learnt about collids. A colloid is a mixture in which one substance of microscopically dispersed insoluble particles is suspended throughout another substance. Sometimes the dispersed substance alone is called .....
Sure! Here, Sign are changing in alternate way. i.e; +,-+, -+, -..........And so on. And each terms are multiple of a of its previous terms. So after -a5, it will come a6 and after it , -a7 will .....
You might have seen aeroplane flying in the sky. While the aeroplane is taking off. From its huge jets engine, it creates huge amount of thrust and the lift, which is more then that of gravity, and so it can resist .....
Many times you may have seen groom or his family demanding cash and valuables from bride's family during the marriage. You may also have read about the bride being rejected by the groom and his family for not bringing enough during the .....
We know that greatest angle is a+d, from the question, a+d=800 ..............i) We know, sum of angles .....
सर्वप्रथम त्यो अनुच्छेद मजाले पढ्ने, महत्वपूर्ण लागेका बुँदाहरु लाई रेखाङ्कित गर्ने .....
सर्वप्रथम त्यो अनुच्छेद मजाले पढ्ने, महत्वपूर्ण लागेका बुँदाहरु लाई रेखाङ्कित गर्ने .....
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You might have learnt there are 206 bones in our body. The study of the bone is called .....
One question at a .....
Do you know that atmospheric pressure decreases with altitude. In general, mercury in the tube adjusts until the weight of the mercury column balances the atmospheric force exerted on the reservoir. High atmospheric pressure places more .....
Liquid chromatography handles typically average and low temperatures operations. Mainly used in separating proteins, small molecules (many statins, anti cancer agents, dyes etc). Any mixture of this sort can be separated provided you chose a .....
Decarboxylation reaction is a important reaction in organic chemistry to decrease the number of carbon from carboxylic acid to one lower compound of original compound by the use of soda lime. e.g .....
Redox reation is such type of reaction in which loss of electron by an element or compound takes place and gain of electron is also simultounsely take place by elements or compound in a reaction. redox reaction is a reaction where redduction and .....
Premcla, would you please review your question once as it is not .....
The school students play a great role in election. You as a school .....
The school students play a great role in election. You as a school student can make sure that their parents and relatives know the voting or not. You can teach about the importance of election and voting rights. You can convince people to cast .....
Do you know, erg is unit of work in CGS ? The erg is a unit of energy and work equal to 10−7 joules. It originated in the centimetre–gram–second (CGS) system of units. ... Its name is derived .....
From the relation of liquid pressure, we have, P = hdg If the depth of liquid column is constant at any place the p ∝ .....
The reference used in measurement is termed as unit. There are various system of units. Out of them, SI unit is one. It was proposed by te Eleventh General Conference on Weights and Measures in 1960. It is a modified form of MKS system of .....
The literal meaning of the union is grouping together. Also in sets, the union means grouping all the elements of the set together in one. If A={1,2,3} and, B={2,4,5} Then, AUB={1, 2,3,4,5}. Here, all the elements of A and B are grouped .....
When copper is exposed to moist air for long time green colour appear in its surface due to the formation of basic copper carbonate .....
The instrument which is used to weight the substance have limitiation after decimal point so exact amount of the substance cannot be measure. So a little bit error is always occurs this error is determined by a factor called as normality .....
Indicator are selected in such a way that give a sharp change of colur in a particular ph at end point. 1. Titration of strong acid and strong base: Either methyl orange or phenolpthalein are used because strong acid have low ph value .....
I'll do a similar but different problem. If a+b+c=π = 180°, prove that the identity is true. sin a + sin b + sin c=4cos(a/2)cos(b/2)cos(c/2) LHS = sina+sinb +sinc = 2sin(a+b)/2 * cos(a-b)/2 + sinc = .....
To caculate the height of tent, we need to find volume and area of base, So, here base area=A=150x3m2=450m2 VOlume of tent=V=150x10m3=1500m3 We know, Volume of cone = 1/3 Area of base x height. or, 1500m3=1/3 x 450m2 x height. Now .....
Now, For the first Rs 300,000, The tax is 1 % of Rs 300,000 i.e. Rs 3000 Then, total taxable salary after 1% of tax is Rs 642,960 - 300,000 Rs .....
Star fish do not have gills, scales, or fins. Fish do have gills, scale and .....
Industries that manufacture things like insulating foams, solvents, soaps, cooling things like Air Conditioners, Refrigerators and ‘Take-Away’ containers use something called chlorofluorocarbons (CFCs). These substances are heavier .....
I need clean, warm, quiet home for my health. I want intersting toys too when I am alone! I will always welcome you! .....
When you turn the world history, you amy come across many leaders. There were leaders like Hitler, mussolini who were reaponsible for large number of death and destruction. These leaders may be termed as fascist. Fascism is a form of nationalim .....
Human body parts .....
Solution
lo = 20cm, α for aluminum = 2.4 * 10-5 /oK or, α for brass, = 2 * 10-5 /oK
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Solution,
Let T1 and T2 be the time period of the pendulum clock at 30° C and 10° C respectively
T1= 2π √l30/g…………..1
T2= .....
The structure of Nepalese society was/is of multi-ethnic, multi-lingual and multi-culture. The state has not addressed them in time. Their expectation has increased in such a way that their expectation can only be fulfilled in federal .....
In the journal entry , furniture a/c .......................dr to cash .....
Soln
Coefficient of superficial expansion (β)=1.2 *10-5 \K
Diameter of the hole in a steel plate at20°C (d) = 1cm
Area of the hole (A20) =πd2/4 .....
The given question can be written as 9a2 - a2b2 - 36 +4b2 + 24ab (3a)2 + 12 ab + (2b)2 - (ab)2 + 12 ab - (6)2 (3a + 2b)2 - (ab - 6)2 Now, by using the formula of a2 - b2, You can write, (3a + 2b + ab - .....
Subsidiary books are a part of journal that is created for recording specific financial transaction of a business. It is more practical, convenient and provide information easily. It record the transaction in .....
In other way, You can firstly calculate the commission amount i.e. 2% of Rs 250000 Then, Convert the remaining amount .....