90 degrees.
A wave is what is in water like when water is moving, and the scientific definition is a wave transvers energy from one place to another.
When a wave hits a surface, it reflects off the surface in a different direction from its original path. The angle of incidence (the angle between the incoming wave and the surface) is equal to the angle of reflection (the angle between the reflected wave and the surface). This phenomenon is known as the law of reflection.
The angle formed between the incident wave and the normal (perpendicular line) at the point of reflection is called the angle of incidence.
The angle between particle velocity and wave velocity in a transverse wave is 90 degrees. This means the particle vibration is perpendicular to the direction in which the wave propagates.
1) Sound wave always require material medium for their propogation. 2)Sound wave are type of transvers wave. 3)Speed of sound wave can be calculated by speed=sqrt(tension*length of wire/massof wire)
A light ray is always at right angles to its wave front.
The angle of a transverse wave is the angle at which the wave oscillates perpendicular to the direction of travel. It represents the up-and-down motion of the wave as it propagates through the medium. The angle remains constant as the wave moves forward.
speed
Snell's law equates the ratios of two angles and wave velocity.sin(a)/V1 = sin(b)/V2When a wave strikes a medium some energy is reflected and some passes through.a is the angle between the longitudinal wave velocity of the wave in the first medium as measured from a perpendicular to the tangent of the surface of the medium.b is the angle between that perpendicular and the longitudinal wave as it is refracted within the medium.The angle of incidence refers to these angles.Clearly, if the wave strikes perpendicular to the surface, a = b = 0 and sin(a) = sin(b) = 1
A transverse wave.
This statement is describing the principle of reflection, which applies to waves bouncing off a surface. According to this principle, the angle of incidence (the angle at which the incoming wave strikes the surface) is equal to the angle of reflection (the angle at which the outgoing wave leaves the surface).
Refraction.(I'm giving you a pass on the wording of the question. A wave always crosses theboundary between two media at some angle. The angle really should have beendescribed in better detail.)