An old building is being demolished by swinging a heavy metal ball from a crane. suppose that such a 100 kg ball swings from a 20-m-long wire at speed 10m/s as the wire passes the vertical orientation. assume the ball stops after sinking 1.5 m into the wall. what was the average force that the ball exerted on the wall?

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.