35. Special Relativity

Which of the following is a reasonable approximation of an inertial reference frame?

Leroy is standing 900 m from firecracker A and 600 m from firecracker B. After exploding, the light from both firecrackers arrives at Leroy at the same time. In Leroy's frame of reference, which firecracker exploded first, or were they simultaneous?

How many electrons, protons, and neutrons are contained in the following atoms or ions: (a) ¹⁰B , (b) ¹³N⁺ , and (c) ¹⁷O⁺⁺⁺ ?

Identify the isotope that is 11 times as heavy as ¹²C and has 18 times as many protons as ⁶Li . Give your answer in the form ᴬS, where S is the symbol for the element. See Appendix C: Atomic and Nuclear Data.

A horizontal beam of laser light of wavelength 585 nm passes through a narrow slit that has width 0.0620 mm. The intensity of the light is measured on a vertical screen that is 2.00 m from the slit. (a) What is the minimum uncertainty in the vertical component of the momentum of each photon in the beam after the photon has passed through the slit? (b) Use the result of part (a) to estimate the width of the central diffraction maximum that is observed on the screen.

An ultrashort pulse has a duration of 9.00 fs and produces light at a wavelength of 556 nm. What are the momentum and momentum uncertainty of a single photon in the pulse?

Which of the following best defines an inertial reference frame?

Which of the following best describes the relationship between Galileo's and Copernicus's views on inertial reference frames?