A cathode-ray tube accelerates electrons to a speed of 26500 kms−1V. What is the potential difference across the tube?
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A cathode-ray tube accelerates electrons to a speed of 26500 kms−1V. What is the potential difference across the tube?
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- An alpha particle is the nucleus of a He-4 atom and has a rest mass of 3727.38 MeV/c2. How much energy is required to accelerate an alpha particle from rest to 0.6c? What is the momentum of the alpha particle once it reaches this speed? Would more, less or the same amount of energy be required to accelerate a proton from rest to this speed?An electron has a speed of 0.620c. (a) Find the speed of a proton that has the same kinetic energy as the electron. 1915 Your response differs from the correct answer by more than 10%. Double check your calculations. km/s (b) Find the speed of a proton that has the same momentum as the electron. km/sTwo electrons are initially held at rest 5pm away from each other. they are then released. when the two electrons are far away from each other, how fast are they moving? remember 1pm=10^-12m. the answer should be 7.1 x 10^6m/s? answer is 7.1x10^6 m/s. please help me calculate this answer value?
- An evacuated tube uses a potential difference of ΔV = 0.38 kV to accelerate electrons, which then hit a copper plate and produce X-rays Write an expression for the non-relativistic speed of these electrons v in terms of e, ΔV, and m, assuming the electrons start from rest. Calculate the non-relativistic speed of these electrons v in m/s.Please Solve Correctly.Determine the energy required to accelerate an electron between each of the following speeds. (a) 0.500c to 0.880c MeV(b) 0.880c to 0.950c MeV
- What velocity does the muon attain when it is accelerated from rest by a voltage of V = 149 MV? v = . . . .c? Use the muon's (rest) mass of 105.7 MeV/c ^2.Six identical particles have a speed 2m/s except for the last ( which is the seventh) particle which has a speed of 4m/s. What is the vavg of these particles?The mass of a proton is 1.67 × 10-27 kg. A. Find the rest energy in joules. B. Find the rest energy in mega-electron volts.
- An electron has a velocity v = 0.990c . (a) Calculate the kinetic energy in MeV of the electron. (b) Compare this with the classical value for kinetic energy at this velocity. (The mass of an electron is 9.11×10−31 kg .)Helpful information: (1) An alpha particle is a helium nucleus, (2) e = 1.6 × 10-¹⁹ C, (3) k = 9.0 × 10⁹ Nm² C-2, (4) 1nm = 1 × 10-⁹ m 1-An alpha particle lies on the x-axis, a distance of 1.0 nanometer from a proton (in this set-up, the alpha particle is at the origin while the proton is in the positive direction). Which of the following choices below represents the magnitude of the electric force on the alpha particle? (a) 2.3 × 10-10 N (b) 4.6 × 10-¹0 N (c) 2.3 × 10-19 N (d) 4.6 × 10-19 N eplacing the voltage sou the following inst choices below time != 1.00 37 instantaneous currentA spacecraft has a length of 100 m when parked on Earth. It is now moving toward a tunnel with a speed of 0.8c (Lo=1.66 L). The lady living near the tunnel can control doors that open and shut at each end of the tunnel, which is 65 m long. The doors are open as the spaceship approaches, but in the very moment that she sees the back of the spaceship in the tunnel, she closes both doors and then immediately opens them again. • According to the lady living near the tunnel: a) no door hit the spaceship because for her the doors weren't closed simultaneously b) no door hit the spacecraft because length contraction makes the spaceship only 60 m long c) no door hits the spaceship because length contraction has made the tunnel 109 m long d) a door hits the spaceship