|
Unlimited Tutoring & Homework Help
|
|
The Photoelectric Effect
The Photoelectric Effect - There are three ways in which electrons eject out of a material. They are (i) Thermionic emission (ii) Field emission (iii) Photo electric emission In all the above cases, energy is given to the material but in different forms. If g..
Kirchhoff's Law
. Thermal equilibrium now demands that E = a I ....................... (2) Where E is the radiant energy per unit time per unit area emitted by the (non-black) body. It follows from Eq.(1) that ....................... (3) But in terms of emissivity e already defined ........................
. Thermal equilibrium now demands that E = a I ....................... (2) Where E is the radiant energy per unit time per unit area emitted by the (non-black) body. It follows from Eq.(1) that ....................... (3) But in terms of emissivity e already defined ........................Group Displacement Law
Group Displacement Law - Soddy and Fajan summarised the a and b - particle emission in the form of the law known as Group Displacement Law. "The emission of a - particle by an element results in the formation of a new element which lies two places t..
Group Displacement Law - Soddy and Fajan summarised the a and b - particle emission in the form of the law known as Group Displacement Law. "The emission of a - particle by an element results in the formation of a new element which lies two places t..Group Displacement Law
Soddy and Fajan summarised the a and b - particle emission in the form of the law known as Group Displacement Law..
Stefan-Boltzmann Law
>where e is a constant for the given surface having a value between 0 and 1. This constant is called the emissivity of the surface. It is zero for a completely reflecting surface and is unity for a black body. Using Kirchhoff's law, where a is the absorptive power of the body. T..
>where e is a constant for the given surface having a value between 0 and 1. This constant is called the emissivity of the surface. It is zero for a completely reflecting surface and is unity for a black body. Using Kirchhoff's law, where a is the absorptive power of the body. T..Solution
(i) Create laws/legislation to force the reduction of air pollution e.g. strict automobile emission standards. In the National Capital Region of Delhi, the pollution laws state that all vehicles being sold have to confirm to Euro-II emission standards, vehic..
Control of Air Pollution
Air pollution can be controlled either at source or at the dispersal stage of various pollutants. Although, the problem of controlling air pollution at source is not easy, it can be reduced to some extent by taking steps such as: Use of modern techniques for efficient reduction of emissions..
Rate of Radioactive Decay
The spontaneous breaking up of the nucleus is known as radioactive disintegration or radioactive decay. Radioactive disintegration is found to obey the following two laws: i) Atoms of all radioactive elements are undergoing spontaneous disintegration i.e., are constantly breaking to form ..
Control of Air Pollution
a) Checking the air pollution by strict imposition of laws on factories. b) Reducing vehicular traffic and encouraging public transport vehicles than individual vehicles. c) Use of unleaded petrol. d) Regular check of exhaust gases from vehicles to declare their status in respect of poll..
a) Checking the air pollution by strict imposition of laws on factories. b) Reducing vehicular traffic and encouraging public transport vehicles than individual vehicles. c) Use of unleaded petrol. d) Regular check of exhaust gases from vehicles to declare their status in respect of poll..Exhaustible Natural Resources
Natural resources that are limited in nature and are liable to be degraded in quantity and quality by human activities are exhaustible natural resources. Examples are forests, soil, wild animals, minerals, fossil fuels etc. The understanding of the environment and its proper conservation, has gain..
See what our Users say :
This tutor was excellent. very clear on all of the problems. I would like to have more tutoring from Tutor Vista
It was a great pleasure working with this tutor was able to take me through the steps of my math problems which was very helpful because since I don't have lots of experience with math by the tutor doing the steps it helps me understand a great deal. Im so excited that Im finally getting this amazing service. We got so much done. thank you.
Incredible help, saved me from failing a test. Thank you so much. This tutoring is amazing! Explains things well, KUDOS - pam
I think the tutors knew their stuff really well and was very helpful. math was actually something I dread.not anymore ,Thank you Tutor Vista - jennifer,New york