The frequency of a wave is the number of wavelengths that this wave covers in unit time (typically a second.)
The wave in this question travels at . In other words, this wave covers in unit time (a second.) How many wavelengths would that correspond to?
The question states that the wavelength of this wave is . Therefore, there would be wavelengths in the span that this wave covered in the unit time of one second (.) Hence, the frequency of this wave would be (three per second,) which is equivalent to (three Hertzs.)
In general, the frequency of a wave with speed and wavelength would be:
The elasticity of a polymer is primarily due to the structure of the molecule and the cross-linking between strands. Hydrogen bonding is a contributor to the shape of the molecule, but not a major player in terms of elasticity. We would have to answer "false". <span> </span>
The total force on the loop is zero because the forces on the opposite sides of the loop are equal but act in opposite directions and as a result they cancel each other out. The two forces on opposite sides to the axis of rotation each give rise to a torque about the axis of rotation. This torque is directed along the axis of rotation.