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The Doppler formula states that the ratio of the velocity of a source to the speed of light is equal to the ratio of the change in wavelength caused by the Doppler shift to the source wavelength, or
A spacecraft has yellow headlights which radiate 600nm photons, and is travelling toward a stationary observer. If the spacecraft is travelling at a velocity of 1% of the speed of light (0.01c), what will be the amount of the shift in wavelength observed (in nanometers)?
Liability
A financial obligation or amount owed by a business to external parties or individuals.
Accumulated Depreciation
The total amount of depreciation expense that has been recorded for an asset since it was put into use, representing the cumulative wear and tear or obsolescence of the asset.
Contra
Contra refers to an account that is used to reduce another account on the financial statements to its net value.
Plant Asset
Long-term tangible assets used in the operation of a business and not intended for resale, such as machinery, buildings, and vehicles.
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