Students and Teachers Forum
It is a thermometer used to measure temperature of human body. We know we can not measure body temperature using ordinary thermometer . Clinical thermometer is specially designed thermometer to measure body .....
We know freezing point of mercury is - 38oC. So we can't measure temperature below this temperature using mercury thermometer. So, mercury thermometer is not useful in very low .....
Answer the following questions.
| Substance | Sp. Heat capacity (JKg-1oC-1) |
| X | 140 |
| Y | 2400 |
| Z | 4200 |
A. Which one needs more heat for the same rise in temperature if equal masses are taken of each?
B. Which one in between X and Z will have higher temperature if equal heat is given to equal mass of each?
C. Specific heat capacity of Y is 2400JKg-1oC-1 . Explain its meaning.
A) Z needs maximum heat because its specific heat capacity is maximum and more heat is required to heat object with more specific heat capacity. B) x will have more temperature because it has less specific heat capacity. C ) It means that 4200 .....
Here, Q = 60 KJ = 60000 J m = 1.5 kg dt = 20 o C now , use S = Q / m . .....
Here mass = 1.5 kg S = 400 J / Kg o C dt = t - 300 now use Q = ms .....
Freezing Point Boiling Point 1. Freezing point is the fixed temperature at which a liquid changes into its solid state upon cooling. 1. Boiling point is the fixed temperature at which a solid changes into its liquid .....
The simple answer is that ice is less dense than water, so ice .....
Air pressure is the weight of air molecules pressing down on the Earth. The pressure of the airmolecules changes as you move upward from sea level into the .....
Let the marks on computer be x . Then total marks obtained = 90 + 92 + 98 + 75 + 82 + x Total number of subjects = 6 Now use, average marks = total marks / number of .....
For 60 men, it lasts for 90 days. For 1 man it lasts for 90 x 60 days For 45 men , it lasts for 90 x 60 / 45 = 120 .....
see this figure short wave from sunlight can enter into greenhouse easily. but reflected longer wavelengths can not pass through it. so heat is trapped inside green house. this makes temperature warmer inside greenhouse. and it is possible to .....
- The families of the martyrs who have sacrificed their life, persons who were forced to disappear, and those who became disabled and injured in all people's movements, armed conflicts and revolutions that have been carried out for progressive .....
Steps for making a computer. 1. Prepare the Mainboard (motherboard). If you want to assemble the well-liked device, you should use Intel i3, i5, i7 Mainboard. 2. Mount the CPU in the socket of the Mainboard. You must choose the correct CPU for .....
- No discrimination shall be made on the ground of gender with regard to remuneration and social security for the same work. - All offspring shall have the equal right to the ancestral property without discrimination on the ground of .....
पारिजातः
The physical quality of life is an attempt to measure the quality of life. The value is the average of three statistics. The statistics are the basic literacy rate, infant mortality at age 1, and life expectancy. These three things play a great .....
√(5x-11) - √(x-3) 4 √(5x-11) = 4 + √(x-3) Squaring both sides, we get, [ √(5x-11) ]2 = [ 4 + √(x-3) ]2 5x-11 = (4)2 + 2.4.√(x-3) + [ √(x-3) ]2 5x-11 = 16 + .....
पारिजातः
An editorial is an article that presents the newspaper's opinion on an issue. Editorial writers build on an argument and try to persuade readers to think the same way they do. Editorials are meant to influence public opinion. It helps to .....
I am 30 years old. How old are .....
It is said that people who are in the access of power; political, economic, and other forms, are called people under supreme class .....
1. Hydrogen + Chlorine → Hydrogen chloride ⟹ H2 + Cl2 ⟶ 2HCl 2. Hydrogen + Nitrogen → Ammonia ⟹ 3H2 + N2 ⟶ 2NH3 3. Potassium chlorate → Potassium chloride + Oxygen ⟹ .....
By the question, Mass(m) = 3000 l Height(h) = 6 m Gravity (g) = 10 m/s2 By using formula. P.E = mgh You can slove .....
If such rules are not changed or modified in course of time, the pace of social transformation will be affected. The outdated rules may not address the need of the people of the present generation. It affects social harmony and creates .....
By the question Mass (m) = 200g = 200/1000 kg = 0.2kg [converting into kg] Veocity (v) =380m/s Kinetic energy(K.E) = ? By the formula K.E = 1 mv2 2 Now use value of .....
मेरी आमा – देवेन्द्रप्रसाद .....
Carbohydrates are the sugars, starches and fibers found in fruits, grains, vegetables and milk products. You can get carbohydrates from rice, beans .....
We know that heritage is our identity. It helps us to be introduced to the international forum. Heritage is the valuable asset of the country. It helps in the promotion of tourism industries as they are the major attractions for the .....
It stayed and helped Nepal for 4 years to establish permanent peace in Nepal. Its function came to and ends on 15th January 2011 A.D. during the tenure of Karin Landgren. It made a great effort for the restoration of peace and order in .....
United Nations is a global organization. It was established on 24th October 1945AD. Its main aim is to maintain international peace and security. Nepal as a peace-loving country got the membership of UNO in 1955AD. Since then, there is a .....
Thapathali, Kathmandu 10th August 2018 Ministry of Home Affairs Singhadurbar, Kathmandu Dear Sir/Madam I am writing to you to make a concern regarding the state of peace in the country. The state of peace in the country is not so good. The .....
The peacekeeping force work for the protection of human rights in the conflict zones. The peacekeeping force assists the government of the conflict zone for the smooth running of the administrative works. The peacekeeping force help to train .....
On the other hand, this practice is not untouched with its drawbacks. Some drawbacks are as follows: - The Nepalese forces may lose their lives in the mission. - The force may suffer from different harmful diseases which later the people in .....
2x - 1 = (√2x + 1 ).1 2x - 1 = √2x + 1 2x = √2x + 1 + 1 2x = √2x + 2 2x - √2x = 2 x ( 2 - √2 ) = 2 x = 2 ∕ ( 2 - √2 ) Rationalise the denominator and solve the value of .....
If then, how does it help to strengthen national unity? Well, inclusiveness helps to strengthen national unity in the following ways: - By mainstreaming each and every caste and creeds of people in the governance system. - By ensuring the .....
3(x+2) = 7 + √(9x2-8x+7) 3x + 6 - 7 = √(9x2-8x+7) 3x - 1 = √(9x2-8x+7) Squaring both sides, we get, (3x - 1)2 = [ √(9x2-8x+7) ]2 (3x)2 - 2.3x.1 + (1)2 = 9x2 - 8x + 7 9x2 - 6x + 1 .....
√(5x+16) - √(5x-14) = 2 √(5x+16) = 2 + √(5x-14) Squaring both sides, we get, [√(5x+16) ]2 = [ 2 + √(5x-14) ]2 5x+16 = 22 + 2.2.√(5x-14) + [√(5x-14)]2 5x + 16 = 4 + .....
If cosx - sinx = 0. cosx = sinx Squaring both sides, cos2x = sin2x or, cos2x = 1 - cos2x or, 2cos2x = 1 or, cosx = 1/√2 We know, cos45° = 1/√2 Thus, x = 45° Again, cos(360° - A) = cosA So, .....
1. CO2 + NH3 → NH2COO + NH4 2. 2 Al + 2 NaOH + 2 H2O → 2 NaAlO2 + 3 H 3. Acid + Metal →Salt + Hydrogen An example: nitric acid + calcium → calcium nitrate + .....