What other graph can be plotted in Worked example 1, and how is its gradient used to
Question:
What other graph can be plotted in Worked example 1, and how is its gradient used to find ρ?
Transcribed Image Text:
WORKED EXAMPLE 1 Plan an experiment to measure the resistivity p of glass, which is about 1010 2 m. You have available a number of sheets of glass of the same size but with different thicknesses. Resistivity p is defined as p = RA 4. Step 1 Identify the variables. • The independent variable is the thickness I of the glass. The dependent variable is the resistance R of the glass. Finding R involves measuring the p.d. across the glass and the current in the glass. The control variable is the area A of the glass. Since this is mentioned in the question, suggest also that the temperature must be constant. Step 2 Describe the method of data collection in logical steps. To alter the independent variable, use glass sheets of different thickness but the same area. The thickness of each piece of glass is measured with a micrometer at several places and averaged. The area A is required. This can be found by measuring the length and breadth of each sheet with a rule and multiplying the values together. Draw a circuit diagram of an ammeter in series with the glass sheet and a power supply, with a voltmeter across the glass. Connections are made to the large surfaces of the glass. This can be done using aluminium foil, or metal plates as in a capacitor, which closely touch each large face of the glass sheet. Use a diagram to show how this is done. The logical steps are then to record ammeter and voltmeter readings with one thickness of glass. Then repeat the readings with different thicknesses, suggesting sensible thicknesses of glass, perhaps every mm from 1 mm to 10 mm. If you are going to perform the experiment these thicknesses may be available, but if you are merely planning the experiment then you must suggest sensible values. Step 3 Add any additional details. How can you obtain reasonable values? Think about the size and Activate Window thickness of the glass to be used and whether you can detect a reasonable change in the Settings to activ dependent variable, the resistance. You might, for example, suggest using a sheet of glass 1
Step by Step Answer:
This question has not been answered yet.
You can Ask your question!
Related Book For
Cambridge International AS And A Level Physics Coursebook
ISBN: 9781108859035
3rd Edition
Authors: David Sang, Graham Jones, Gurinder Chadha, Richard Woodside
Question Posted:
Students also viewed these Sciences questions
-
What is perpetuity, and how is its present value conveniently calculated? How do you find the present value of a growing perpetuity?
-
What is a fixed exchange rate and how is its value fixed?
-
What is a deficiency judgment and how is its value to a lender affected by the Bankruptcy Code?
-
In Exercises find the derivative of the function by the limit process. f(x) = x - 4x + 5
-
Construct and assess alternative strategic options for Korres.
-
Elizabeth Mjelde, an art history professor, was interested in whether the value from the Golden Ratio formula, (larger + smaller dimension larger dimension was the same in the Whitney Exhibit for...
-
Quantum Computer Company is considering the purchase of automated machinery that is expected to have a useful life of 4 years and no residual value. The average rate of return on the average...
-
(a) What are the factors to consider in deciding whether a fast or slow approach to change is best? (b) What are the factors to consider in deciding whether a top-down or participatory approach to...
-
In 2025, a textbook written by Carla Vista Co. personnel was sold to Blossom Publishing, Inc. for royalties of 15% on sales. Royalties are receivable semiannually on March 31, for sales in July...
-
A skydiver in free fall subject to gravitational acceleration and air resistance has a velocity given by where v T is the terminal velocity and a > 0 is a physical constant. Find the distance that...
-
The period T and the length l of a simple pendulum are measured to be T = 1.5 0.1 s and l = 0.560 0.001 m. The formula T = 2I/g is used to find the acceleration of free fall g. What is the best...
-
Each reading on a thermometer can be made with an uncertainty of 0.5 C. The thermometer is used to measure a temperature rise from 20 C to 80 C. What is the percentage uncertainty in the measurement...
-
Evaluate each expression. 4! 5
-
Create a program using Python that prompts the user for a number, tests to see whether that number is even or odd and prints out "Number is Even" if it is even, or "Number is Odd" if it is odd. Hint:...
-
Centennial Molding purchased machinery on January 1, 20X1, for $385,000. For 3 years, the company depreciated the machinery using the straight-line method assuming a 12-year useful life and a $24,000...
-
Question Two. 35 points. The earth's latitudes are divided into three zones. The Tropical Zone runs from latitude 0.0 to latitude 23.5, the Temperate Zone from just above latitude 23.5 to latitude...
-
Write an interface named "PlayString" which has one method called "StringBuider backwardsString(String s)". Write one class that implements the PlayString interface such that the backwardsString...
-
Lisle is considered a dependent of her parents for federal income tax purposes. In 2 0 2 3 , Lisle earned $ 1 4 , 0 0 0 for catalog modeling work. Compute Lisle's standard deduction.
-
Griffin Ross Construction Inc. (GRC) builds upscale homes in several New England cities. The firm is subject to the ups and downs of the construction industry and has a historical beta of 2.1. GRC...
-
The purpose of this case is to come up with a contingency plan[s] in order to sustain the program Move With Me, a program that serves thousands of community members throughout Lower Manhattan. The...
-
The energy of the occupied valence MOs of H 2 S is shown as a function of the HSH bond angle. Compared to the analogous diagram, Figure 24.11, for H 2 O, the 2a1 MO energy decreases more as the bond...
-
The following diagram shows the energies of valence molecular orbitals of boron trifluoride. The energies of three occupied orbitals (the a 2 HOMO and doubly degenerate e orbitals) are shown. The...
-
The density of states (DOS) of pyrite, crystalline FeS 2 (as calculated by Eyert et al, Physical Review B 55 (1998): 6350, is shown next. The highest occupied energy level corresponds to zero energy....
-
The firm's target capital structure is the mix of debt, preferred stock, and common equity the firm plans to raise funds for its future projects. The target proportions of debt, preferred stock, and...
-
A five-year project has an initial fixed asset investment of $300,000, an initial NWC investment of $28,000, and an annual OCF of -$27,000. The fixed asset is fully depreciated over the life of the...
-
You have been hired as a financial consultant by a Tanzanian family looking to diversify their investment portfolio. The family has a range of financial goals, including wealth preservation, income...
Study smarter with the SolutionInn App