How to caluculate the luminous efficiency?
A wheel of perimetre 220cm rolls ona level road at a speed of 9 km per hr.how many revolutions does the wheel make per second?
what is coma?
how the aspirator pump works?
What is your definition of a quasar?
What causes sonoluminescence?
Is a new theory of light and matter needed to explain what happens at very high energies and temperatures?
What is dark energy?
How to calculate an orbit at a given altitude?
why do some stars end up as black holes but others don't?
what is Lambert's cosine law?
How can you change the colors of the lasers and is one color stronger that the other?
what is a geostationary satellite?what are its applications?
2 Answers Geo Research Centre,