If the speed of a spring is 3 m/s and the wavelength is 0.1 m. what is the frequency

30 Hz

Explanation:

by the definition,

V = fλ

where,

The frequency of a wave is the number of times per second that the wave cycles. - measured in Hertz (Hz)

wavelength of a wave is the distance between corresponding points of two consecutive waves.

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.

3. dark matter

empty space could also be a simple vacuum