A small block with mass m is placed inside an inverted conethat is rotating about a vertical axis such that the time for onerevolution of the cone is T. the walls of the cone make an angle Bwith the vertical. The coefficient of static friction betweenthe block and the cone is ?. Draw a free body diagram.If the block is to remain a constant height h above the apex of thecone, what are the maximum and minimum values of T?
If the U-Shaped conductor in fig below has resisted ?, whereas that of the moving rod is negligible, derive a formula for the current I as a function of time. Assume that the rod has length l, starts at the bottom of the U at t=0, and moves with uniform speed v in the magnetic field B. The cross-sectional area of the rod and all parts of the U is A.
You wish to test the claim
You believe the population is normally distributed, but you do not know the standard deviation. You obtain the following sample of data:
What is the critical value for this test? (Report answer accurate to three decimal places.) critical value =
What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic =