Electron accelerated through an electric potential
An electron and a proton, starting from rest, are accelerated through an electric potential difference of the same magnitude. In the process, the electron acquires a speed ve, while the proton acquires a speed vp. Find the ratio ve/vp.
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Use this information to determine the minimum sample size that could be used in next year's survey to estimate the mean salary of IMA members to within $2000 with 98% confidence.
The electric field midway between two equal but opposite point charges is 747 N/C, and the distance between the charges is 28.7 cm. What is the magnitude of the charge on each?
If the fracture strength measurements of glass have a standard deviation of 0.4 thousands of pounds per square inch, how many glass fracture strength measurements should be taken if the sample mean is to be within 0.2 thousands of pounds per squar
Do this exercise by hand. A famous brand-name manufacturer wants to know whether people prefer Nibbles or Wribbles. They sample each type of cracker and indicate their like or dislike on a scale from 1 to 10. Which do they like the most?
An industrial psychologist wishes to study the effect of motivation on sales in a particular firm. 24 new salespersons are randomly divided into two groups of 12. One group is paid an hourly rate and the other group is only paid a commission.
The net income reported on the income statement for the current year was $225,000. Depreciation recorded on plant assets was $38,000. Accounts receivable and inventories increased by $2,000 and $8,000, respectively.
What is the mass of the spaceship and the acceleration due to gravity at the surface of Planet X? Assume that the acceleration due to gravity is constant.
Determine (a) the maximum temperature in the cycle, the net work output and the thermal efficiency, the mean effective pressure and (d) the net power output.
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