ThinkMerit

The force of buoyancy exerted by the atmosphere on a balloon is $B$ in the upward direction and remains constant. The force of air resistance on the balloon acts opposite to the direction of velocity and is proportional to it. The balloon carries a mass $M$ and is found to fall down near the earth’s surface with a constant velocity $v .$ How much mass should be removed from the balloon so that it may rise with a constant velocity $v$? 

The force of buoyancy exerted by the atmosphere on a balloon is $B$ in the upward direction and remains constant. The force of air resistance on the balloon acts opposite to the direction of velocity and is proportional to it. The balloon carries a mass $M$ and is found to Read more…

By ThinkMerit, ago

Electronegativity

Electronegativity is a measure of an atom’s ability to attract the shared pair electrons of a covalent bond towards itself. If atoms bonded together have the same electronegativity, the shared pair of electrons will be equally shared. If the electrons of a bond are more attracted to one of the atoms Read more…

By ThinkMerit, ago

Kjeldahl’s method

The Kjeldahl method first came into existence in 1883 and was developed by a Danish chemist named Johan Kjeldahl. This method was specifically developed for determining the nitrogen contents in organic and inorganic substances. The Kjeldahl method of nitrogen analysis is the Industrial method for calculating the protein content in Read more…

By ThinkMerit, ago

Is JEE Main 2020 Postponed?

Yes the JEE Main 2020 is postponed until further notice from the National Testing Agency (NTA). The exam is postponed because of nationwide lockdown due to COVID-19 pandemic. On 14th April 2020, National Testing Agency has requested students and parents to refer only NTA website for authentic information. Many fakes Read more…

By ThinkMerit, ago