Ballistics is the science of mechanics that deals with the launching, flight, behavior, and effects of projectiles, especially bullets, gravity bombs, rockets, or the like; the science or art of designing and accelerating projectiles so as to achieve a desired performance.
A ballistic body is a body with momentum which is free to move, subject to forces, such as the pressure of gases in a gun or a propulsive nozzle, by rifling in a barrel, by gravity, or by air drag.
Section-1: General Science - Physics Question - 12
A rainbow is an optical and meteorological phenomenon that is caused by:
diffusion of sunlight through water droplets
reflection, refraction and dispersion of light in water droplets
A heavy, silvery d-block element, mercury is the only metallic element that is liquid at standard conditions for temperature and pressure; the only other element that is liquid under these conditions is bromine, though metals such as caesium, gallium, and rubidium melt just above room temperature.
Section-1: General Science - Physics Question - 15
Which is the brightest star in the southern constellation of Centaurus and the third brightest star in the night sky?
Alpha Centauri or Toliman, is the brightest star in the southern constellation of Centaurus and the third brightest star in the night sky.
The Alpha Centauri system is located 1.34 parsecs or 4.37 light years from the Sun, making it the closest star system to our Solar System.
Although it appears to the unaided eye as a single object, Alpha Centauri is actually a binary star system whose combined visual magnitude of −0.27 makes it the third brightest star seen from Earth after the −1.46 magnitude Sirius and the −0.72 magnitude Canopus.