An ant sits on the back of a mouse. The mouse carries the ant across the floor for a distance of 10 meters. Was there work done by the mouse? Explain.

convergent boundary is the correct answer

The wavelength of a radio wave whose frequency is 900 kHz will be 10³/3, or you can write it as 333.33 meters.

What is Wavelength?

To characterize waveform signals that are transmitted across wires or into space, the term "wavelength" is used to refer to the separation between two identical positions (adjacent crests) in succeeding cycles. Typically, this length in wireless systems is measured in meters (m), centimeters (cm), or millimeters (mm) (mm). When describing the wavelength of infrared (IR), visible light (UV), and gamma radiation, units of 10⁻⁹  nanometers (nm) or angstroms (10-10 m) are more usually used.

Frequency, which is defined as the number of wave cycles per second, and wavelength have an inverse relationship. The wavelength of a signal decreases with increasing frequency, or we can say that wavelength and refractive index are inversely proportional to each other.

According to the question, the given values are :

v = 3 × 10⁸ m/s and,

frequency, f = 900 kHz or,

f = 900 × 10³ Hz

λ = v / f

λ = (3 × 10⁸) / (3 × 10³)

λ = 10³/3 metes or,

λ = 333.33 meters.

So, the wavelength of a radio wave is 333.33 meters.

To get more information about wavelength :

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Globular clusters are nearly spherical groups of about 10,000 to 1 million stars. A typical galaxy may contain up to a few hundred globular clusters; our galaxy, the Milky Way, has somewhere between 125 and 200 globular clusters orbiting the galactic center.