The fact that we can only calculate probabilities for values of physical quantities in quantum measurements means that
a. radiation and matter are not described by mathematical relations between measurements.
b. the probabilities cannot be calculated from mathematical relationships.
c. the results of physical measurements bear no relationship to theory.
d. the average values of a large number of measurements correspond to the calculated probabilities.
e. the average of the values calculated in a large number of different theories corresponds to the results of a measurement.
d
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Phase Angles: An series circuit consists of an ac voltage source, a resistor of resistance 810 ?, and an inductor. (There is no capacitance in the circuit.) The current amplitude is 0.40 A, and the phase angle between the source voltage and the current has magnitude 11°. (a) Does the source voltage lag or lead the current?(b) What is the voltage amplitude of the source?
What will be an ideal response?
The following images represent four types (wavelength bands) of light. Rank these from left to right based on the amount of each that is emitted (as thermal radiation) by Earth’s surface, from greatest to least. If you think that two (or more) types should be ranked as equal, drag one on top of the other(s) to show this equality.
Where would the celestial equator appear to be located for an observer standing directly on one of the Earth's poles? Hint: Change your location on the Earth to the North Pole.
a. Directly overhead at the zenith. b. Between the zenith and the horizon. c. It would be parallel to and coincident with the horizon d. The celestial equator would not be visible.
The maximum theoretical thermodynamic efficiency of a heat engine operating between hot and cold reservoirs is a function of which of the following?
a. hot reservoir temperature only b. cold reservoir temperature only c. both hot and cold reservoir temperatures d. None of the above choices are valid.