Which of the following statements are true regarding electromagnetic waves traveling through a vacuum? More than one statement may be correct.

(a) All waves have the same wavelength.
(b) All waves have the same frequency.
(c) All waves travel at 3.00 3 108 m/s.
(d) The electric and magnetic fields associated with the waves are perpendicular to each other and to the direction of wave propagation.
(e) The speed of the waves depends on their frequency.

option c and d.

Explanation:

Electromagnetic waves are those waves which do not need any material medium to transfer.

Speed of the electromagnetic waves is equal to 3 x 10⁸ m/s.

All electromagnetic wave have different frequency and wavelength.

Electromagnetic waves  is perpendicular to the direction of propagation.

Hence, the option which is true are option c and d.

a high pressure system is a dense air mass that is usually cooler and drier than the surrounding air. a low pressure system is a less dense air mass that is usually wetter and warmer than the surrounding air.

in general, areas that experience high atmospheric pressure also experience fair weather. low pressure systems can cause the formation of clouds and storms. air usually flows from areas of high pressure to areas of low pressure..

d.7.5cm is your answer