Auniform rod xy of weight 10.0n is freely hinged to a wall at x. it is held horizontal by a force f acting from y at an angle 30° to the horizontal, as shown. what is the value of f? a- 5.0 n b- 8.7cm c- 10.0cm d-20.0cm

The goal of this experiment was to answer the question, "how does diffraction occur? " suppose you formulated this alternate hypothesis: if the gap width is increased while keeping wavelength constant, then the observed diffraction will decrease because the less the ratio between wavelength and gap width is, the smaller the observed diffraction angle will be. to test this hypothesis, you would change the  gap widthdiffraction anglewavelength  and observe the  gap widthdiffraction anglewavelength  in the system. therefore, the independent variable would be the  gap widthdiffraction anglewavelength  and the dependent variable would be the  gap widthdiffraction anglewavelength.