Physics, 28.08.2019 09:30 magicalforlife
12. the windings of a particular type of dc motor are in its rotor. the magnetic field is reversed during the rotation of the rotor by means of the
a. field magnets.
b. commutator.
c. applied power source reversal.
d. armature coil split windings.
Answers: 2
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Which of the following statements comparing electron microscopy and light microscopy is false? which of the following statements comparing electron microscopy and light microscopy is false? both the electron microscope and the light microscope use the same wavelengths for illumination. images produced by light microscopes can be in color, whereas electron microscope images are black and white unless they are artificially colored. the electron microscope has greater resolution than the light microscope. electron microscopes can allow examination of viruses and internal cell structures, whereas light microscopes are limited to objects that are 0.5 micrometers and larger. request answer
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Physics, 23.06.2019 02:20
3. a particle with initial velocity v⃗ 0=(5.85×103m/s)j^ enters a region of uniform electric and magnetic fields. the magnetic field in the region is b⃗ =−(1.35t)k^. you can ignore the weight of the particle. a. calculate the magnitude of the electric field in the region if the particle is to pass through undeflected, for a particle of charge +0.640 nc.
Answers: 2
12. the windings of a particular type of dc motor are in its rotor. the magnetic field is reversed d...
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