Physics Laboratory Manual
4th Edition
ISBN: 9781133950639
Author: David Loyd
Publisher: Cengage Learning
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Textbook Question
Chapter 1, Problem 3PLA
State how one determines the accuracy of a measurement. Apply your idea to the measurements of the three students above and state which of the students has the most accurate measurement. Why is that your conclusion?
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You are measuring the length of a tube using a ruler. Your actual measurement of the tube is 6 mm ± 1 mm. Compare the accuracy and precision of your measurement
compared to the expected measured value of 6.0 mm ± 0.1 mm
Describe the accuracy of your measurement:
Choose...
Describe the precision of your measurement:
(Hint: Look at the number of decimal places in the measurement.)
v Choose...
I don't know
High
Low
Check
School Attendance
PE Grade
100
95
96
80
86
77
74
65
77
90
51
30
a. Write a linear equation that fits the data:
(hint, make equation on desmos)
D. Using your line of best fit, predict the grade if the student's attendance is 90.
Find the correlation coefficient:
d. Based on your answer from part b, select the statements that would be true of this
correlation.
С.
(Select ALL that apply.)
O The correlation is strong.
O The correlation is weak.
O The correlation is positive.
O The correlation is negative.
O There is no correlation at all.
Which value of H do you consider to be least accurate? Give reasons for your answer and explain how the accuracy could have been improved.
Chapter 1 Solutions
Physics Laboratory Manual
Ch. 1 - State the number of significant figures in each of...Ch. 1 - Perform the indicated operations to the correct...Ch. 1 - State how one determines the accuracy of a...Ch. 1 - Apply Equations 1, 2, and 3 to calculate the mean,...Ch. 1 - State the characteristics of data that indicate a...Ch. 1 - Which student has the best measurement considering...
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- An equation predicts the relation between x and y as T2 = k. L The measurement between T and L are given as 3 2.6 5 7.2 8 18.0 Find the slope k of the best fitted line of a plot between T2 and L from the following data. All numbers have no units. Answer to two decimal places. Note that the fitted line should pass through the origin,.arrow_forwardNote: If this method is confusing just stick to the dimensional analysis method described above. When you convert from g small unit to a large unit you must divieN A familiar example is converting dollars to cents. $1 = 100 cents (smaller units) To convert from dollars to cents, we multiply by 100. To convert from cents to dollars, we divide by 100. See the lab supplement for more practice in conversions. tis class you need to know the order from large to progressively smaller units (or vice-versa). In Table 2, we nave gone from a large unit (Km) to a smaller unit (um), Using Table 1, enter conversion factors for units of mass (weight) and volume below: Table 3: Mass (Weight) (Common prefixes: kilo, milli, micro, nano) The basic unit of mass (measured as weight) is the gram. One gram is defined as the mass of one cubic centimeter of water. Mass in grams and mg is often measured in the lab using a digital balance. Enter the correct conversion factors in the table below. 1Kg = 1000g 1g…arrow_forwardA) The data points you put on the plot (T2 vs. m) should form a straight line. Draw the best-fit line on your plot. Calculate the slope of the line (remember that slope = rise/run). Show your calculation in the space below, and round the result to 3 sig figs. slope = ____________________ B)Consider the theoretical equation for the period of a vertical mass-spring system shownbelow. Square both sides of the equation so you have T2 as a function of m. Notice how therelationship between T2 and m is linear (this is why a straight line fit the data so well before).The constant in front of m is the slope of the line! Use this to determine the force constant ofthe spring, k in units of Newtons per meter (N/m).k = ___________________________ N/marrow_forward
- I need help solving this problem step by step to understand it please give answer in exponential format and 3 significant figuresarrow_forwardA. Unit Conversion. Show your complete solution. Write your answers up to 3 significant figures. Recall: 1 Gy = 100 rad, 1 Sv = 100 rem 1. 3.5 μGy to mrad 2. 5.0 mrad/h to mGy/h 3. 45.0 mrem to μSvarrow_forwardSolve the problem completely. Show your complete solution and express your final answer with the correct number of significant figures.arrow_forward
- How many correct experiments do we need to prove a theory? Explain.arrow_forwardWhat is the percent error in the accuracy in the measured volume of the cube? Use the calculated value as the expected value. Round your answer to 2 digits.arrow_forwardUsing the data in Table VI, calculate the % Difference between distance using your shoe and using tape measure. Using the data in Table VI, calculate distance (in) per step.arrow_forward
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