A0.11-mm-wide slit is illuminated by light of wavelength 470 nm. consider a point p on a viewing screen on which the diffraction pattern of the slit is viewed; the point is at 32.0° from the central axis of the slit. what is the phase difference between the huygens' wavelets arriving at p from the top and midpoint of the slit?

Abearing is designed to a reduce friction b. support a load c. guide moving parts such as wheels, shafts and pivots d. all of the above

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The force acting on a beam was measured under the same operating conditions and a sample of 5 data points was collected. this process was repeated by 3 observers. the pooled standard deviations of these 3 data sets was 1.21. determine the true mean force using all pooled data (with a 95% probability). the result should look like this: true mean = mean +/- margin of error