Physics Laboratory Experiments
8th Edition
ISBN: 9781285738567
Author: Jerry D. Wilson, Cecilia A. Hernández-Hall
Publisher: Cengage Learning
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Chapter 3, Problem 6ASA
Explain how readings from 0.00 through 1.00 mm are obtained from the micrometer thimble scale when it is calibrated only from 0.00 through 0.50 mm.
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A reference mass of 50.00 Kg is weighted using a digital balance with 1% accuracy. The measurement is repeated 5 times to give 50.0; 50.1; 50.1; 50.2 and 50.2 Kg; with a mean value of 50,12 Kg and S.D.= 0,084 Kg. The balance has a 4 digit display with one decimal point. Calculate the bias, the precision and the measurement uncertainty.
Chapter 3 Solutions
Physics Laboratory Experiments
Ch. 3 - Prob. 1ASACh. 3 - Does a laboratory balance measure weight or mass?...Ch. 3 - What is the function of the vernier scale on the...Ch. 3 - Distinguish between positive and negative zero...Ch. 3 - What is the purpose of the ratchet mechanism on a...Ch. 3 - Explain how readings from 0.00 through 1.00 mm are...Ch. 3 - Prob. 7ASACh. 3 - Prob. 8ASACh. 3 - Explain the probable source of error(s) in the...Ch. 3 - Prob. 2Q
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- 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 Physicsarrow_forward1.26 An American golf ball has a mass of 1.62 +0.01 oz and a nom- inal diameter of 1.68 in. Determine the precision that the diameter of the ball must be measured so that the uncertainty of the density of the ball is ±1 percent.arrow_forwardIn a Measurement ,the Expected value is 72 V and the measured value is 63 V. Find (i) Absolute error Ea , (ii)Relative error Er, (iii) Absolute accuracy Aa (iv) Relative Accuracy Ar. i) Absolute Error= (ii)Relative error= (iii) Absolute accuracy= (iv) Relative Accuracy =arrow_forward
- 1) A line was measured by EDM found 4032.32 m, what is the probable error in this distance if the EDM precision is + (2 mm+3 ppm)?arrow_forwardWhat is the volume and its approximate uncertainty of a sphere of radius 1.96 +- 0.0m?arrow_forwardExpress each approximation of p to six significant figures:(a) 22/7and (b) 355/113. (c) Are these approximations accurate to that precision?arrow_forward
- 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…arrow_forwardMEASURED USING CENTIMETER RULER MEASURED USING CENTIMETER RULER Measured Diameter d (cm) Measured Thickness t (cm) sigs dime 1.76 0.14 penny 1.88 0.152 quarter 2.36 0.175 UNCERTAINTIES Uncertainty in Diameter δd (cm) (taken as EXACT) Uncertainty in Thickness δt (cm) (taken as EXACT) sig figs dime 0.05 0.05 penny 0.05 0.05 quarter 0.05 0.05 RELATIVE UNCERTAINTIES Relative Uncertainty in Diameter δd/d (%) Relative Uncertainty in Thickness δt/t (%) sig figs dime ? ? penny ? ? quarter ? ?arrow_forwardWhat is the density uncertainty ±8, of a metal block with mass = 554.4+-0.37 grams, length=D 6.01+-0.03 cm, width 3.41+-0.02 cm, and height = 2.84+-0.01 cm? Use 2 decimal place precision. Do not convert units from those given.arrow_forward
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