Unit 1 Lab Report

The first length measured in a laboratory experiment is 2.5 ± 0.1 m and the second length is 3.4 ± 0.1 m.a. What is the sum of the lengths?b. What is the difference in the lengths?c. What is the percentage uncertainty in each a and b?

A. Volume Measurement Problem: You have 3 empty containers. One container holds 3L, a second holds 5L and a third, holds 9L. How can you use these containers to measure exactly 7L of water? The steps in the problem have been "framed out". Follow the steps and write what you did to get 7L. Frame on Volume Measurement Step 1 2 3 5 3-L container 5-L container 9-L container Total number of Liters To get exactly 7liters from 3 containers holding 3L, 5L and 9L, I did these steps: First, Second, Third, Fourth, Finally, By following these steps, I

Question 8 A student obtains a set of measurements for the mass, and size (length, width and height) of a iron anvil. They then compared their results with the known value for the anvil. They find that their results were off by about 20%. The student then repeats the measurements multiple times, average all of the results and find that now their results are only off by about 2%. In this case, which of the follow statements best describes the experimental uncertainty? Systematic uncertainty Random uncertainty Human error O Broken equipment Question 9 The same student obtains a new set of measurements for the mass, and size (length, width and height) of a different iron anvil and compared their results with the known value for that anvil. They find that their new results were off, again, by about 20%. The student then repeats the measurements multiple times, average all of the results and find that their results are STILL off by the same amount. In this case, which of the follow…

Three students, Tom, Sally and Kevin, did an experiment where the accepted size of nano-particles of calcium-tin-oxide is 105.0 nm. Their findings are given in the table below. Whose measurement is most precise, and whose is most accurate? Note that measurement is done in nanometers (nm). Kevin (nm) Sally (nm) 107.0 Trial No. Tom (nm) 1. 103.7 107.7 2. 105.6 101.1 107.5 3. 106.9 105.4 107.9 Mean 105.4 104.5 107.7 None of the given options Tom's measurement is most precise, and Kelly's measurement is most accurate. Sally's measurement is most precise, and Kelly's measurement is most accurate. Kevin's measurement is most precise, and Tom's measurement is most accurate

Question 8 A student obtains a set of measurements for the mass, and size (length, width and height) of a iron anvil. They then compared their results with the known value for the anvil. They find that their results were off by about 20%. The student then repeats the measurements multiple times, average all of the results and find that now their results are only off by about 2%. In this case, which of the follow statements best describes the experimental uncertainty? Human error Broken equipment Random uncertainty Systematic uncertainty Question 9 The same student obtains a new set of measurements for the mass, and size (length, width and height) of a different iron anvil and compared their results with the known value for that anvil. They find that their new results were off, again, by about 20%. The student then repeats the measurements multiple times, average all of the results and find that their results are STILL off by the same amount. In this case, which of the follow statements…

The accepted value of the density of aluminum at standard temperature and pressure is 2.70 g/cm³ What is the discrepancy between the accepted density and your experimental density in g/cm²? Is this discrepancy significant? QUESTION 9 The accepted value of the density of aluminum is 2.70 g/cm³ while our computed value is 2.8 g/cm³ What is the percent uncertainty of our experimental density (observing correct significant figures)? a. 0.037 Ob.37 c.3.70 d.4 0.5 poin

Question 2 The following figure shows a balance used to measure the mass of an orange cylinder. Read the value of that mass from the balance scale. 40 50 60 O a. m= (44± 2) gram O b. m= (44+1) gram Ocm=(42±1) gram O d. m= ( 43 +2) gram A Moving to the next question prevents changes to this answer. Tearis DAT (2) O Type here to search Lenovo

Question 7 In a measurement of B two results were obtained, B₁ = (2x10^-3) T and B₁ = (1.00x10^-4) T B2 = (2.0x10^-3) T and B₂ = (7.00x10^-4) T The result of the comparison test is Report your answer to 1 significant figures. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: Answer x10

tabletop 91.41m±0.05m cube ruler clipper micrometer Triple beam balai digital balance 3.30cm±0.05cm 2.184±0.001cm 27.310±0.005mm 64.42±0.05g 64.58±0.01g 2.92m±0.05m 2.71cm±0.05cm 2.482±0.001cm 25.251+0.005mm 216.20m±0.05m 2.50cm±0.05cm 3.136±0.001cm 34.140±10.0005mm

UNCERTAINTIES IN MEASUREMENT: 1.the dimensions of a metal cylinder were measured three times and yielded the following result: -height=5.50cm,5.48cm,5.48cm -diameter=2.50cm,2.54cm,2.54cm Find: a) True value (height) of the cylinder b) True value (diameter ) of the cylinder c) relative uncertainty of the height of the cylinder d)the percentage uncertainty of its diameter e)the volume of the cylinder based on the true values of its dimensions

Physics Please help me with this question It was from a Lab that we have to understand but im unsure how to answer this.

A person (he/she) measures heart rate by counting the number of beats in 30 sec.-If 45 ± 2 beats are counted (in exactly 30sec), find  the percent uncertainty in the measurement of heartbeats per minute? *If 45 ± 2 beats are counted in 30.0 ± 0.5 sec, what is the minimum of the range of values one expects for the heart rate in beats per minute?  *If 45 ± 2 beats are counted in 30.0 ± 0.5 sec, what is maximum heart rate in beats per minute?

Question Details SerEssen1 1.P.027. [35052 Estimate the number of 1.8 cm radius Ping-Pong balls that would fit into a 10 ft by 11 ft room with a ceiling 8 ft high (without being crushed). balls

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Q2 / unit cell of a hypbthfetioaing figure shows the- la- To whieh-system does this unit belong? b- calculate the theoretical density? Note that A = 47.87 0.458 nm 0.29-hm

1. The following data are the measurements of the dimensions of a box: l = 8.6 ± 0.5 cm  h = 20.19 ± 0.01 mm  w = 0.75 ± .02 mHow should the volume of the box be reported (central value ± uncertainty) incm3? Show solution.2. If the accepted value of the volume of the box in the previous question is 1300 cm3, is the measurement acceptable? Explain.

3. Absolute, fractional, and percentage uncertainties a. What is the absolute uncertainty for the following measurements? 5.8 cm, 5.6 cm, 5.7 cm, 5.4 cm, 5.4 cm, 5.6 cm b. Determine the fractional uncertainty in part a. c. Determine the percentage uncertainty in part a.

Q 6 please

C. leas t del Niu 3. Three students make measurements (in m) of the length of a rod using a meter stick. Each student's measurements are tabulated in the table below. Using your calculator in statistic mode calculate the mean L, standard deviation S and uncertainty u of the measurements. Student L1 L3 L2 1.4711 L4 1.4715 SD u Student 1 1.4717 1.4722 1,4716 t.4754 1.4710 1.4753 1.4759 1.4756 1.4749 Student 2 Student 3 1.4719 1.4723 1.4705 1.4719 Note that the actual length of the rod is determined by a laser measurement technique to be 1.4715 m (this should be considered the standard value). a) State how one determines the accuracy of a measurement. Apply your idea to the measurements of the three students above and state which student has the most accurate measurement.

1.) A 232 mL cup of whole milk contains about 27 mg of cholesterol. Express the cholesterol concentration of the milk in kilograms per cubic meter (kg/m^3). 2.) A typical person has an average heart rate of 69.0 beats/min. Calculate the given questions. How many beats does she have in 7.0 years? How many beats in 7.00 years? And finally, how many beats in 7.000 years? Pay close attention to significant figures in this question.

12. DETAILS PREVIOUS ANSWERS OSCOLPHYS2016 1,3.P.015. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Suppose that a person has an average heart rate of 98.4 beats/min. (Express your answers to problems in this section to the correct number of significant figures and proper units.) (a) How many beats does he or she have in 4.0 y? 4.0 X Your answer cannot be understood or graded. More Information beats (b) How many beats does he or she have in 4.00 y? 4.0 Check the number of significant figures. More Information. beats (9) How many beats does he or she have in 4.000 y? 4.0 Check the number of significant figures. More Information. beats Enter a number with the correct number of significant figures.

The table data: 15 1.75 13 1.63 11 1.5 9 1.35 7 1.19 5 1.01 3 0.78 A. Graph these data B. Describe the graph C. Using the data, calculate 1/2t^2 and complete table 2 below

UNCERTAINTIES IN MEASUREMENT: 2.The mass of 15.0 mL of a particular liquid was measured to be T1=7.47g,T2=7.45g and T3=7.53g.Find the following: a)the true mass of the liquid b)the relative uncertainty of the mass of the liquid c)the percentage uncertainty of its mass d)the density of the liquid e)the percent error of its density if the true value is 7.5g/mL

The density of bubble gum is about 1g/cm3. You blow an 8g wad of gum into a bubble 9cm in diameter. What is the thickness of the bubble? Use the equation: 4πr2 to help solve the problem

Units, Measurements, and Quantities: The Measurements of Uncertainty Can you explain this one please? Thank you!

YOUR TEACHER PRACTICE ANOTHER Body surface area is an important piece of medical information because it is a factor in temperature regulation as well as some drug level determinations. The Hosteller formula gives one way of estimating body surface area B, in square meters. The formula uses the welight w, in kilograms, and the height h, in centimeters. The relation is /hw Consider a man who weighs 80 kilograms (a) write a formula for B as a function of h. 60 (b) what height range will resut in a body surface area range from 1.7 to 2 souare meters? Ohsi80.00 cm Ons130.0s cm or h a 160.00 cm O no solution 130.05 cmshs180.00 cm On2130.05 cm