Which term is described as a wave that is not confined to the space along the medium? tsunami

standing wave

traveling wave

breaking wave
(there will be more Q's about this :\ )

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

A6.0-μf air-filled capacitor is connected across a 100-v voltage source. after the source fully charges the capacitor, the capacitor is immersed in transformer oil (of dielectric constant 4.5). how much additional charge flows from the voltage source, which remained connected during the process?

The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656(red) and 486 (blue). light from a hydrogen lamp illuminates a diffraction grating with 500 lines per mm, and the light is observed on a screen 1.50 behind the grating. what is the distance between the first-order red and blue fringes?