Modern instruments usually have digital readouts; the reading in the rightmost digit will sometimes fluctuate up and down among several values. What type of error is this? Explain its effect on a large data set.

If the number of significant figures is 6, what is the value of the pre-specified Error(?s) Select one: O a 0.000005% O b. 0.0005% O c. 0.005% ০ d 0.00005%

4. (b) If the uncertainty in each number is 10, what is the percent uncertainty in each? (Give your answer to 4 significant figures.)  999.0 = _____  % 1000.0 = _____ % (c) Which is a more meaningful way to express the accuracy of these two numbers, significant figures or percent uncertainties?

ACTIVITY 1. Identify the levels of accuracy and precision of the following sets of values. Put a check (/) on the blank(s) to describe the set it/they follow(s). Theoretical value: 1 kg Set A 996 g 324 9 762 g Accuracy: Accuracy: Set B 989 g 1 045 g 1 132 g Accuracy: Set C 768 g 783 g 792 g Set D 997 g 994 g 998 g Accuracy Precision: Precision: Precision: Precision: ACTIVITY 2. Answer the following problems completely. 1. A carpet is to be installed in a room of length 9.72 m and width 5.3 m. Find the area of the room retaining the proper number of significant figures. 2. The speed of light is now defined to be 2.997 924 58 x 10" m/s. Express the speed of light to (a) three significant figures, (b) five significant figures, and (c) seven significant figures. 3. Suppose your hair grows at the rate of 1/32 inch per day. Find the rate at which it grows in nanometers per second. Because the distance between atoms in a molecule is on the order of 0.1 nm, your answer suggests how rapidly…

A person's blood pressure is measured to be 129±8 mm Hg.129±8 mm Hg. What is the percent uncertainty? percent uncertainty:   %% Assuming the same percent uncertainty and the same measurement device, what is the uncertainty in a blood pressure measurement of 93 mm Hg93 mm Hg? uncertainity:   mm Hgmm Hg Question Credit: OpenStax College Physics

7. A cylinder ħas á radius of 4.6 ± 0.4 cm and a height of 5.36 ± 0.3 cm. (a) Find the volume of this cylinder and its uncertainty in cubic centimeters. (Hint: The formula for the volume of a cylinder is V = TT r2 h.) (b) Find the % uncertainty for r, h and V. (c) Find the volume of this cylinder in cubic meters. 2 3 4 r with the appropriate ing water, heated by heat. Beakers 1 and 2 of water. The height of of the flame under ine the change in

(a) How many significant figures are in the numbers 99.0 and 100.0? 99.0       100.0       (b) If the uncertainty in each number is 1, what is the percent uncertainty in each? (Give your answer to 3 significant figures.) 99.0       % 100.0       % (c) Which is a more meaningful way to express the accuracy of these two numbers, significant figures or percent uncertainties? significant figurespercent uncertainties

It says that it's not the appropriate number of sig figs.

A measurement of the circumference of a disk has an uncertainty of 2.6mm. How many mea-surements must be made so that this circumference can be estimated with an uncertainty of only0.52 mm?