From the atomic clock that utilizes C-133 which has an approximate frequency of 9.193 x 109 Hz. The wavelength of the energy is calculated to be 0.0326m.
From the given information:
- The frequency f = 9.193 × 10⁹ Hz = 9.193 × 10⁹ 1/s
- The wave speed c = 3.00 × 10⁸ m/s
Recall that:
The wavelength is the spatial successive distance between two crests of a wave and can be expressed by the formula:
Therefore, we can conclude that the wavelength of the atomic clock is 0.0326m. As such Option D is correct.
Learn more about wavelength here:
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D. Heat is absorbed by the reaction
Answer:
$13,500
Explanation:
The differential analysis of the proposal to replace the commercial oven is shown below:-
The Total differential decrease in cost = Annual maintenance cost reduction × Number of years applicable
= $23,000 × 5
= $115,000
Inflow cash = The Total differential decrease in cost + Proceeds from sale of equipment
= 115,000 + $8,500
= $123,500
The Net differential decrease in cost from replacing equipment = Inflow cash - Cost of new equipment
= $123,500 - $110,000
= $13,500
Answer:
It is true that earth was once covered with oceans and little dry land.
Explanation:
Over the course of around four billion years, the Earth's oceans have lost about a quarter of their original mass. Today the atmosphere is rich in oxygen, which reacts with both hydrogen and deuterium to recreate water, which falls back to the Earth's surface. So the vast bulk of the water on Earth is held in a closed system that prevents the planet from gradually drying out. According to the researchers, the continents emerged relatively suddenly from an ocean that covered 95 percent of the Earth's surface. The appearance of large masses of dry land would have caused more extreme weather, changes in ocean currents and the emergence of proper seasons. In turn, these environmental changes may have led to rise in atmospheric oxygen that enabled the explosion of new life forms around 500 million years ago.
