Determining the speed of the proton
At a certain position the horizontal component of the magnetic field of Earth is 2.5*10^-5, due North. A proton moves eastward with just the right speed for the magnetic force on it to balance its weight. Determine the speed of the proton?
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The object is around 6.9 cm in front of a spherical mirror. The magnification is +1.3. What are (i) the image distance (comprising sign), (ii) the focal length of the mirror (comprising sign), and (iii) the radius of curvature of the mirror (compr
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A capacitor is made up from the two 1.8 cm diameter coins separated through a 0.16 mm thick piece of paper (K = 3.7). A Battery of Twelve Volt is joined to the capacitor. Determine how much charge is on each coin?
The mechanic charges $35 an hour plus parts to fix the car. If parts cost $90 and it took 5 hours to do job, find total cost of repair? Illustrate the solution and answer.
A certain adjustment to the machine will change length of the parts it makes but will not affect the standard deviation. The length of the parts is normally distributed, and standard deviation is 0.5 mm. After an adjustment is made, a random sampl
An unstable particle at rest breaks up into two fragments of uneven mass. The mass of the lighter fragment is around 2.80 x 10-28 kg and that of the heavier fragment is around 1.61 x 10-27 kg. When the lighter fragment consists of a speed of 0.893c
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