Start learning 50% faster. Sign in now
Mass of each ball = 0.02 kg Initial velocity of each ball = 5 m/s The magnitude of the initial momentum of each ball, pi = mass × velocity = 0.02 × 5 = 0.1 kg m/s After the collision, the balls change their directions of motion without changing the magnitudes of their velocity. Final momentum of each ball, pf = − 0.1 kg m/s Impulse imparted to each ball = Change in the momentum of the system = pf − pi = – 0.1 – 0.1 = – 0.2 kg m/s The negative sign indicates that the impulses imparted to the balls are opposite in direction.
The Pointing vector of electromagnetic waves has the same dimensions as that of:
The part of the eye having the largest refractive index is -
The pitch of a sound is primarily determined by which of the following?
What type of lens is used to correct myopia (nearsightedness)?
The intensity of any wave is proportional to which quantity?
In an n-type silicon, which of the following statements is true:
Which of the following phenomena establishes the transverse nature of light waves?
When the speed of car is doubled, then what will be the braking force of the car to stop it in the same distance?
In the equation of motion (2as = v² - u²), (s) represents:
Ball pen functions on the principle of :