Physics (Part-IV) (Railway)

• So, the red colour deviates the least and the violet colour deviates the most while passing through a prism.

• The principle behind its working is the principle of Hooke's law.

• Inside power plants, dynamos are most often found.

• As. time is not considered as a vector quantity, and neither energy or work because the work is not directional.

• The power is a scalar quantity because it has a unit magnitude but no direction.

• X-radiation is referred to as Röntgen radiation, after the German scientist Wilhelm Rontgen who discovered these In 1895.

• So, 1 N = 1 kg m s-2, or 1 kg m/s2.

• At Earth's surface. P waves travel somewhere between 5 and 8 kilometers per second.

• Deeper within the planet. where pressures are higher and material is typically more dense, these waves can travel up to 13 kilometers per second.

• P waves travel through rock the same way that sound waves do through air.

• Force is defined as the rate of change of momentum. For an unchanging mass, this is equivalent to mass x acceleration.

• So, 1 N= 1 kg m s-², or 1 kg m/s².

• These waves involve shearing and rotation of the material as the wave passes through it. but not volume change.

• They travel only through solids.

• 1 light year = 9.4605284 * 1015 meters.

• As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in vacuum in one Julian year.