COLLEGE PHYSICS,VOL.1
2nd Edition
ISBN: 9781111570958
Author: Giordano
Publisher: CENGAGE L
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Question
Chapter 5, Problem 1Q
(a)
To determine
An example of motion in which the magnitude of the instantaneous velocity is always larger than the average velocity.
(a)
Expert Solution
Answer to Problem 1Q
Circular motion is an example of motion in which the magnitude of the instantaneous velocity is always larger than the average velocity.
Explanation of Solution
Instantaneous velocity is the rate of change of position with respect to time. Whereas the average velocity is the displacement divided by the corresponding time. When an object performs a circular motion, the instantaneous velocity is always greater than the average velocity. This is because the average velocity over any complete cycle is zero since the displacement is zero. But instantaneous velocity assumes some finite value at any given time.
It is obeyed for any object which is accelerating continuously in the direction of velocity.
Conclusion:
Therefore, Circular motion is an example of motion in which the magnitude of the instantaneous velocity is always larger than the average velocity.
(b)
To determine
Example of motion having instantaneous velocity is never parallel to the instantaneous acceleration.
(b)
Expert Solution
Answer to Problem 1Q
In uniform circular motion, the instantaneous velocity is always perpendicular to the instantaneous acceleration.
Explanation of Solution
During uniform circular motion, the object is moving with constant speed, as the object moves in a circle the change in direction is also conatnt.it is an example of motion having instantaneous velocity is never parallel to the instantaneous acceleration.
Conclusion:
Therefore, in uniform circular motion, the instantaneous velocity is always perpendicular to the instantaneous acceleration.
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Statistical thermodynamics. The number of imaginary replicas of a system of N particlesa) cannot be greater than Avogadro's numberb) must always be greater than Avogadro's number.c) has no relation to Avogadro's number.
Lab-Based Section
Use the following information to answer the lab based scenario.
A student performed an experiment in an attempt to determine the index of refraction of glass.
The student used a laser and a protractor to measure a variety of angles of incidence and
refraction through a semi-circular glass prism. The design of the experiment and the student's
results are shown below.
Angle of
Incidence (°)
Angle of
Refraction (º)
20
11
30
19
40
26
50
31
60
36
70
38
2a) By hand (i.e., without using computer software), create a linear graph on graph paper
using the student's data. Note: You will have to manipulate the data in order to achieve a
linear function.
2b) Graphically determine the index of refraction of the semi-circular glass prism, rounding your
answer to the nearest hundredth.
Use the following information to answer the next two questions.
A laser is directed at a prism made of zircon (n = 1.92) at an incident angle of 35.0°, as shown in
the diagram.
3a) Determine the critical angle of zircon.
35.0°
70°
55
55°
3b) Determine the angle of refraction when the laser beam leaves the prism.
Chapter 5 Solutions
COLLEGE PHYSICS,VOL.1
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