The predictions of special relativity can sound implausible at first. Which of the following provide observational evidence that the theory is correct?
A) Subatomic particles in accelerators exhibit effects of time dilation and mass increase at high speeds.
B) Light is always observed to travel at the same speed.
C) Time dilation can be observed in airplanes.
D) All of the above are correct.
D) All of the above are correct.
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Light of a given wavelength is used to illuminate the surface of a metal, however, no photoelectrons are emitted. In order to cause electrons to be ejected from the surface of this metal you should
A) use light of a longer wavelength. B) use light of a shorter wavelength. C) use light of the same wavelength but increase its intensity. D) use light of the same wavelength but decrease its intensity.
The phenomena of quantization is NOT found in the following
A. charge on an electron. B. photoelectric effect. C. gravitational effect. D. Compton effect.
A very long straight wire carrying 2.0 A lies along the x-axis. A second very long parallel wire carrying 3.0 A in the same direction is positioned parallel to the x-axis and passes through the point (0, 1.0 m)
What is the magnitude of the magnetic field at the point (0, 0, 1.0 m)?
Currently, in the United States, which sector of the economy uses the most energy?
a. Industry b. Transportation c. Commercial d. Residential