Phys 1260 Exam 4 Conceptual Review Questions And Answers

To outside observers at rest, the overall sizes of objects traveling at relativistic speeds are {Ans: smaller}Rays with the shortest wavelengths have the {Ans: highest frequencies and energies}Successive bright fringes in an interference pattern result from {Ans: distance from the slits successively increasing one wavelength at a time}Refraction results from differences in light's {Ans: speed}Two light bulbs are connected to a battery, one at a time. The bulb that draws more current has the {Ans: lower resistance, and is brightest}The superposition of waves can produce {Ans: - reinforcement - cancellation - partial cancellation (all of these)}A coulomb of charge flowing in a bulb filament powered by a 6-volt battery is provided with {Ans: 6 joules}For an isotope with a half-life of two days, at the end of four days the amount that remain is {Ans: one-quarter}Which travels with the greatest speed in a vacuum? {Ans: - radio waves - light waves - x-rays - gamma rays (all have the same speed)}According to the special theory of relativity, while traveling at very high speed your pulse rate {Ans: remains unchanged}A beam of electron has {Ans: - wave properties - particle