Find out the resistivity of the wire
When 170 V is applied across a wire that is 7.7 m long and has a 0.25 mm radius, the magnitude of the current density is 1.4 x 104 A/m2. Find the resistivity of the wire.
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If the average test score for the sample is M = 104, is this result sufficient to conclude that inserting the easy questions improves student performance? Use a one-tailed test with a = .01.
A researcher is investigating the effectiveness of a new medication for lowering blood pressure for individuals with systolic pressure greater than 140. For this population, systolic scores average m = 160 with a standard deviation of s = 20, and
Calculate the torque on the wire when the plane of the coil makes an angle of 46.1 degrees with the direction of the field.
Suppose the cumulative distribution function of the random variable X is F(x) = 0 when x<-2 , F(x) = .25x + .5 when -2 <= x < 2 and F(x) = 1 when 2<=x (<= means greater than or equal). Determine the following a. P(X<1.8) b. P(X&g
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