A rectangular coil carrying a current in a magnetic field will experience a net torque that will cause the coil to rotate in that field, if the field is not along the coil axis
Indicate whether the statement is true or false
TRUE
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When light of wavelength 450 nm falls on a single slit of width 0.30 mm, what is the angular width of the central bright region?
A) 0.086° B) 0.13° C) 0.17° D) 0.26° E) 0.35°
Double-Slit Interference: Two thin slits are 6.00 ?m apart. Monochromatic coherent light falls on these slits, and produces a fifth-order bright interference fringe at an angle of 32.3° away from the centerline. What is the wavelength of the light?
A. 164 nm B. 416 nm C. 614 nm D. 641 nm
Artificially induced radioactive elements generally have
A) long half-lives. B) short half-lives. C) no half-lives.
How do observations of distant galaxies help us learn about galaxy evolution?
A) Observations at different distances show galaxies of different ages and therefore different stages of evolution. B) We can observe the birth of galaxies. C) We can observe the evolution of a single galaxy over time. D) We can observe two galaxies merging and what the result is, helping us learn how mergers affect evolution. E) We can see what our galaxy used to look like and therefore theorize about the physical processes that led to its current appearance.