In an old-fashioned television set, electrons are accelerated through a potential difference of 25.2 kV. What is the de Broglie wavelength of such electrons? (Relativity is not needed.) Number i Units

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What constraints does the uncertainty principle place on our knowledge of the world? To get a sense of scale, we’ll look at the uncertainty in speed for a confined electron and for a confined dust particle.a. What range of velocities might an electron have if confined toa 0.30-nm-wide region, about the size of an atom?b. A 1.0@mm@diameter dust particle (m ≈ 10-15 kg) is confined within a 5-μm-long box. Can we know with certainty if the particle is at rest? If not, within what range is its velocity likely to be found?

An electron, starting from rest, accelerates through a potential difference of 992 V. What is the final de Broglie wavelength of the electron, assuming that its final speed is much less than the speed of light? Number i Units