Question 4 1 pts Enter the measurement of the width of the blue box in cm from the image: C 3 4 01234567890Question 3 1 pts You are given the measurements of a thin rod: Height: h=1.23+0.01m Diameter: d=0.26+0.05cm What is the fractional uncertainty in V (i.e. )?Question 6 1 pts Another student says to you "the uncertainties aren't right, there shouldn't be an uncertainty on y=0\". What do you say? [select all) I] "no, 0 can have an uncertainty, but they should all have the same uncertainty if they were measured with the same instrument" I] "oh yeah, we should fix that and make it zero\" [I "hmm, yeah, and the fit should really go right through zero" "no, 0 is just another measurement and we have to consider all the different sources of uncertaintyjust like any other" Question 7 1 pts A different student says "why don't we just divide the y values by x to get the slope and average them?". What's wrong with this approach? (select all} I: We don't know if a y-intercept is expected or not; this approach assumes there is no y-intercept IZ The slope is actually Ay/Ax, not W): I: We don't need to average them as they should all have the same value. I: The linear fit offers greater constraint on the data than calculating for individual points and averaging them I: We should take the most common value, not the average