The nucleus of a hydrogen atom, a proton, sets up an electric field. The distance between the proton and electron is about 5.1 × 10?11 m. What is the magnitude of the electric field at this distance from the proton? [The charge on the proton is +1.6 × 10?19 C.]
What will be an ideal response?
5.5 × 1011 N/C
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When the curve of a vertical structure matches the inverted image of a drooping chain held at both ends, the curve is called a
A) parabola. B) hyperbola. C) catenary.
A beam of protons in an accelerator incident on a metal plate carries a current of 150 ?A. How many protons strike the plate in 24.0 s?
a. 1.60E+5 b. 3.60E+9 c. 2.25E+16 d. 3.91E+13
The southern highlands of Mars date to which geological era?
A) Amazonian B) Hesperian C) Cenozoic D) Noachian
A Young's double slit has a slit separation of 2.50 × 10^-5 m on which a monochromatic light beam is directed. The resultant bright fringes on a screen 1.00 m from the double slit are separated by 2.30 × 10^-2 m. What is the wavelength of this beam? (1 nm = 10-9 m)
a. 575 nm c. 373 nm b. 454 nm d. 667 nm