A watt is one ______________ per second
Fill in the blank(s) with correct word
joule
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Captain Planet measures the magnetic forces on a proton which is vertically falling at 1996. m/s at the equator (take the Earth's field to be 0.40 Gauss horizontal and pointing Northward)
What FORCE would she measure? (Give both amount of Newtons and direction.)
What is the critical angle for light traveling from crown glass (n = 1.52 ) into water (n = 1.33 )?
A) 42° B) 48° C) 53° D) 57° E) 61°
A single-slit diffraction pattern is formed on a distant screen. Assuming the angles involved are small, by what factor will the width of the central bright spot on the screen change if the wavelength is doubled?
A) It will be cut to one-quarter its original size. B) It will be cut in half. C) It will double. D) It will become four times as large. E) It will become eight times as large.
If a rubidium surface is irradiated with blue light of wavelength 450.0 nm, what is the kinetic energy of the electrons emitted? (The work function for rubidium is f = 2.09 eV.)