Suppose we use optical radiation (l = 500 nm) to determine the position of the electron to within the wavelength of the light. What will be the resulting uncertainty in the electron's velocity?


116 m/s

Physics & Space Science

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In the Hertzprung—Russell diagram most stars are found

A) on the main sequence B) in the red giant region C) in the white dwarf region D) in the supergiant region

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Any indication of prehistoric life preserved in rock is called

a. a shale. b. a radionuclide. c. a fossil. d. none of these.

Physics & Space Science

In the inductor of a 60-Hz AC series circuit, the peak voltage precedes the peak current in each cycle by what time interval?

a. 2.1 × 10^-3 s c. 4.2 × 10^-3 s b. 8.3 × 10^-3 s d. 1.7 × 10^-3 s

Physics & Space Science

A positively charged insulating rod is brought close to an object that is suspended by a string. If the object is attracted toward the rod we can conclude:

A) the object is positively charged B) the object is negatively charged C) the object is an insulator D) the object is a conductor E) none of the above

Physics & Space Science