I have no idea about these questions!

Question 1 (1 point) Which of the following tools/software will be used to take measurements in order to achieve the lab goals? There may be more than one correct answer, select all correct answers Protractor/Angle Finder Beaker & Graduated Cylinder Calipers Ruler O Triple Beam Balance Micrometer O Electric BalanceQuestion 2 (1 point) What is the smallest number of significant figures in the following measurements: v = 12.0 m/s a = 0.101 m/s t = 21.0s d = 2.00x10^3 m 0 4 O 1 3 2Question 3 (1 point) You are trying to measure a stretch of sidewalk, but it is too long for your tape measure. You decide to measure it in two steps. The first measurement is L1 = 2.60 t 0.02m and the second measurement is L2 = 4.90 i 0.03 m. You determine the total length using Ltot = L1 + L2, what is the uncertainty on this length? Present your answer with one significant figure Your Answer: Answer units Question 4 (1 point) You have a garden which measures 7.45: 0.40m long and 5.05: 0.48m wide. You determine the total area using A = L * W, what is the uncertainty on this area? Provide your answer with two significant figures Your Answer: Answer units