Question 7 [1 point} The density of an object is determined by dividing the mass by the volume: 9:?7 In order to determine how much of the uncertainty in the density comes from the uncertainty in the volume, we need to calculate: 0 AP with m=0 0 AP with Am=0 with V = 0 with AV = 0 0 AP with V = 0 and Question 8 [1 point} Given that _2h 972 then the proportion of the total uncertainty which comes from the uncertainty in Us: 0 2(h + Ah) 2h :2 t2 0 2h _ E (t At)2 t2 0 Both of the above are true. 0 Neither of the above are true. Question 9 [1 point} The number of significant figures in the quantity 0.0402 is Question 10 [1 point) Which of the following values is expressed in the most correct form? 0 1.021 x 103 :l: 30 O 1.021 x 103 :l: 3 x 101 O (1.02 :l: 0.03) x 103 O (1.021 :I: 0.03) x 103 O 1021 :l: 30 Question 11 [1 point) Which of the following is the most likely precision measure for the digital reading shown? Question 12 [1 point) Which of the following pairs of numbers agree with one another? 0 1.23 :i: 0.04m and 1.13 i 0.07m O 0.8 :i: 0.93 and 0.1$ :i: $0.23 0 Both pairs of numbers agree. 0 Neither pair of numbers agrees. 0 Not enough information is given