Answer:
ΔE = 5.02 x 10⁻¹⁹ j
Explanation:
ΔE (photon) = h·f = (6.63 x 10⁻³⁴ j·s)(7.57 x 10¹⁴ s⁻¹) = 5.02 x 10⁻¹⁹ j
h = Planck's Constant = 6.63 x 10⁻³⁴ j·s
f = frequency (given) = 7.57 x 10¹⁴ s⁻¹
Each natural element has a characteristic light spectrum that helps identify it in samples of unknown substances. Spectroscopy is the practice of examining spectra and comparing them to those of known elements. Using spectroscopy methods, scientists can identify pure substances or compounds and the elements in them.
3. Is the best representation of conductivity
The correct answer is Events that happen over and over form a pattern.
- An Event is a collection of an experiment's results. Say, for instance, that you throw a coin as part of an experiment. This experiment's result is whether the coin lands "heads" or "tails." These can be regarded as the events related to the experiment.
- Data repetitions in predictable ways are referred to as patterns
- Pattern helps to understand the trend of occuring event.
- The general format that an event follows is called the pattern.
- Pattern cannot exist without a number of events. Events, however, sometimes happen randomly.
- Pattern doesn't explain the cause of the event.
Therefore the correct answer is B. Events that happen over and over form a pattern.
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Answer:
D
Explanation:
i learned this in elementary
