Which of the following waves can travel through a medium, but does not require the medium to propagate? sound waves ocean waves light waves seismic waves

The correct answer is "light wave".

Explanation:

Sound wave is a longitudinal wave in which the particle of the medium travels parallel to the propagation of the wave.

Sound wave needs medium to travel. It can propagate in solid, liquid and gas.

It can travel fastest in solid in comparison to liquid and gas.

Seismic waves and ocean need medium to travel.

Light wave is transverse in nature. It does not need any medium to travel. It can travel in vacuum. It travels with the speed of the light.

Therefore, light waves can travel through a medium, but does not require the medium to propagate.

can be answered using momentum.

momentum = p

p1= mass1 * velocity1

p1 = p2

therefore

p1 = 6kg * 4m/s

p1 = 24kgm/s

p2=m2 * v2

24 kgm/s = 7kg * v2

v2 = 24 kgm/s / 7kg

v2= 3.42 m/s

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it