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How does the angle of an inclined plane relate to its efficiency, given the coefficient of friction between a body and the plane?

Let’s define the efficiency first. The efficiency is basically the ratio between what we want over what we pay for. So, we want to lift an object up to a height, say H. In the ideal scenario we lift that ...

Answered by Alexandru S. • Physics tutor

14532 Views

2 resistors of resistances 150 ohms and 5000 ohms respectively are in series with each other. They both are also in parallel with a 1000 ohm resistor. What is the total resistance?

Firstly, you should start by working out the total resistance for the 150 ohm and 5000 ohm resistors which are in series: -In series the total resistance is given as the ...

Answered by Gaggan J. • Physics tutor

1818 Views

An isotope of 238,92-Uranium decays into a stable isotope of 206,82-Lead through a series of alpha and beta decays, how many of each does it go through?

This is a good example of where simplification can make an otherwise tricky question a lot easier. It is easy to get confused trying to work out different isotopes and the extra products of the decays, bu...

Answered by Nathan M. • Physics tutor

2621 Views

Which are the forms of heat you know. Explain them briefly including an example

The most common ways to transfer heat are conduction and convection. Conduction is heat transfer through mollecular collision. The slower speed particles, or colder particles will increase their kinetic e...

Answered by Joao A. • Physics tutor

1889 Views

Which are the types of carrier movements and how are they activated

Drift - As a result of an electric field

Diffusion - As a result of a carrier gradient, by other words a difference in the carrier level from one side to the other, usually when we have a p-n junct...

Answered by Joao A. • Physics tutor

1698 Views