Questions

When the piece of iron is lowered into the water, the water level in the bucket increases. And so the pressure at the bottom of bucket also increases. Thus the total thrust at the botto also increases. Therefore the spring balance reading increases.

The 2019 BRICS summit is the eleventh annual BRICS summit, an international relations conference attended by the heads of state or heads of government of the five-memberstates Brazil, Russia, India, China and South Africa. The summit will be held in Rio de Janeiro, Brazil, the third time Brazil has hosted the summit after the 2014 summit.

Vivipary means germination even when attached to the mother plant. Usually the saline marsh plants (Halophytes) have their seeds growing even when they are inside the fruits attached to the tree.

A binary semaphore is one, which takes only 0 and 1 as values. They are used to implement mutual exclusion and synchronize concurrent processes.