Questions

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

Burning the candle at both ends meaning is to overwork starting early in the morning and staying till late nights.

In the first step of DNA replication called initiation, the DNA pair gets unwidened.

Fluoride deficiency is a disorder which may cause increased dental caries due to a lack of fluoride in the diet. Dental caries or tooth decay is the breakdown of dental tissues by the acidic products released by the "bacterial fermentation of dietary carbohydrates”

The Cartesian Coordinates can be retrieved from spherical coordinates (l,q,a) by:

X = r.sinq.cosa

Y = r.sinq.sina

Z = r.sinq

Using the same we get for P,

Y = P.sinq.sina

Guglielmo Marconi, an Italian invetor invented Radio in 1890's.

A Garbage Truck has wheels to move and flies like insects houseflies, mosquitoes in the garbage it is carrying. Hence, it is not an aircraft.