What is the new resistance of the wire
A wire of initial length L0 and radius r0 has a measured resistance of 1.0 . The wire is drawn under tensile stress to a new uniform radius of r = 0.45r0. What is the new resistance of the wire?
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The following are the heights, in inches, of ten middle school basketball players. Determine the data range for the following data set. Also, construct a frequency table for the data set, use a class interval width of 2 and start with 62.5 inches.
What proportion of the following sample of ten measurements lies within 2 standard deviation of the mean?
To make sure that this is the correct assumption, he has decided to conduct a test by randomly sampling 60 bills and recording the actual tips. What is the null and alternative Hypothesis?
A uniform electric field of magnitude 445 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 3.10 cm. What is the change in potential energy associated with the electron?
Suppose after charging a 14.4 µF capacitor to 15 V, you connect it to another already charged capacitor of 7 µF and 9 V. What voltage will your voltmeter read across those two capacitors connected in parallel?
A proton accelerates from rest in a uniform electric field of 638 N/C. At some later time, its speed is 1.28 x 106 (a) Find the magnitude of the acceleration of the proton.
What is the margin of error. What is the ci interval based on your margin of error. If you wanted to ensure a margin of error of no more than 15 customers what sample size do you need?
Nichrome wire of cross-sectional radius 0.786 mm is to be used in winding a heating coil. If the coil must carry a current of 9.50 A when a voltage of 2.10 102 V is applied across its ends, find the following. (a) the required resistance of the co
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