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Physics Laboratory Experiments
8th Edition
ISBN: 9781285738567
Author: Jerry D. Wilson, Cecilia A. Hernández-Hall
Publisher: Cengage Learning
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Concept explainers
Question
Chapter 11, Problem 1ASA
To determine
The three general empirical rules to describe friction.
Expert Solution & Answer
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Answer to Problem 1ASA
The three general empirical rules to describe friction are given below.
Explanation of Solution
Friction refers to the force resisting the relative motion between contacting material surfaces, fluid layers and material elements sliding against each other.
The three general emipirical rules for frriction includes:
- Firctional force is independent of the surface area of contact.
- Frictional force is directly propotional to the load, the perpendicular component of the force pressing the surfaces together.
- Frictional force is independent of the sliding speed.
Conclusion:
Thus, the three general empirical rules to describe friction are given above.
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Students have asked these similar questions
Question 6:
Chlorine is widely used to purify municipal water supplies and to treat swimming pool
waters. Suppose that the volume of a particular sample of Cl₂ gas is 8.70 L at 895 torr
and 24°C.
(a) How many grams of Cl₂ are in the sample?
⚫ Atomic mass of CI = 35.453 g/mol
• Molar mass of Cl₂ = 2 x 35.453 = 70.906 g/mol
Solution:
Use the Ideal Gas Law:
Step 1: Convert Given Values
• Pressure: P = 895 torr → atm
PV=
= nRT
1
P = 895 ×
= 1.1789 atm
760
•
Temperature: Convert to Kelvin:
T24273.15 = 297.15 K
• Gas constant: R = 0.0821 L atm/mol. K
Volume: V = 8.70 L
Step 2: Solve for n
.
PV
n =
RT
n =
(1.1789)(8.70)
(0.0821)(297.15)
10.25
n =
= 0.420 mol
24.405
Step 3: Calculate Mass of Cl₂
Final Answer: 29.78 g of Cl₂.
mass nx M
mass=
(0.420)(70.906)
mass=
29.78 g
E1
R₁
w
0.50
20 Ω
12
R₁₂
ww
ΒΩ
R₂
60
E3
C
RA
w
15 Ω
E2
0.25
E4
0.75 Ω
0.5 Ω
Solve plz
Chapter 11 Solutions
Physics Laboratory Experiments
Ch. 11 - Prob. 1ASACh. 11 - What is the normal force, and why is it used...Ch. 11 - Why is it important to have the string parallel to...Ch. 11 - What is the coefficient of friction, and in what...Ch. 11 - Explain how graphs of weight versus normal force...Ch. 11 - Explain why fs sN; that is, why is fs less than...Ch. 11 - Speculate, in terms of the microscopic surface...Ch. 11 - (a) Prove that tan is equal to k when the block...Ch. 11 - Suppose that the block were made to move up the...
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