An electron whose mass 9.11 x 10-31 kg is moving at 3 x 107m/s. What constant force is required to bring it to rest in 1.5x10-9 cm, as might occur at the target of an x-ray target
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An electron whose mass 9.11 x 10-31 kg is moving at 3 x 107m/s. What constant force is required to bring it to rest in 1.5x10-9 cm, as might occur at the target of an x-ray target?
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- An electron and a positron, each with a kinetic energy of 2.500 MeV, annihilate, creating two photons that travel away in opposite directions.What is the frequency of each photon?What is the speed of a beam of electrons (in SI units) that go undeflected when passing through crossed electric and magnetic fields of magnitude (5.07x10^0)x104 V/m and (4.270x10^0)x10-3 T, respectively? Give your answer to 3 sf.A proton in a linear accelerator has a de Broglie wavelength of 117 pm. What is the speed of the proton? Express your answer with the appropriate units.
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- Suppose a cyclotron is operated at an oscillator frequency of 11.2 MHz and has a dee radius 41.9 cm. Estimate the total path length traveled by a deuteron in the cyclotron during the (entire) acceleration process. Assume that the accelerating potential between the dees is 60.4 kV. The deuteron mass is m = 3.34 × 10-27 kg.An electron is moving at 6.0 x 10^6 m/s. A photon of what wavelength would have the same (relativistic) momentum as the electron?25. Alpha particles are emitted in nuclear decay processes with typical energies of 5 MeV. In analogy with Example 4.9, determine the range of kinetic energies of an alpha particle trapped in a nucleus-sized region and deduce whether the alpha particle can exist inside the nucleus.