The use of teams in organizations has grown exponentially in recent decades due to increased competition. Teams are more popular because they can better utilize employee talents, be more flexible and responsive to change, and help motivate employees by increasing participation in decision making. The chapter aims to analyze the popularity of teams, contrast different types of teams and groups, identify characteristics of effective teams, and determine when individuals should be used instead of teams.
96. Physics 30 Unit 4
Electromagnetism Exam Part B
Name: __________________ Date: ________________
Written Response #1
Use the following information to answer the next question.
• Describe two experiments or observations which show EMR
behaving like a
wave. Explain how the observed behaviors are ‘wave-like’. (2
marks)
• Describe two experiments or observations which show EMR
behaving like a
particle. Explain how the observed behaviors are ‘particle-
like’. (2 marks)
Electromagnetic radiation (EMR) has been modeled by
physicists as a wave and as
a photon which has both wave and particle characteristics.
2
Written Response #2 Name: ______________
97. Zoe conducted an experiment to determine the focal length of a
convex lens. She used
an optics bench to illuminate an object and project a real image
of it onto a screen and
recorded the data in the chart below:
Object
Distance
(cm)
Inverse of distance
to object
(cm-1)
Image Distance
(cm)
Inverse of distance
to image
(cm-1)
25.0
100.0
27.0
99. • Graph the data to produce a straight line. Be sure to include:
(3 marks)
o Labels for the x and y axes, including correct units , and
o a title
• Use the graph to determine the focal length of the convex lens.
(2 marks)
4
Written Response #3 Name: ______________
Use the following information to answer the next question
100. You must completely analyze the data and identify the metal. In
your response,
• Identify the region of the electromagnetic spectrum to which
the incident
frequency radiation belongs. (1 mark)
• Provide a graph of the results on the next page. (3 marks)
• Determine the value, with units, of the slope. Identify the
significance of the
slope. (2 marks)
Name: ______________
A student performed a photoelectric effect experiment in which
he exposed an
unidentified metal to various frequencies of incident
electromagnetic radiation and
measure the stopping voltage of the emitted photoelectrons.
101. He calculated the maximum kinetic energy of the emitted
photoelectrons.
His results are given in the table below.
Frequency of incident electromagnetic
Radiation (1015 Hz)
1.3 1.4 1.5 1.6 1.7 1.8
Maximum kinetic energy of emitted
Photoelectrons (10-19 J)
1.0 1.8 2.4 3.1 3.8 4.4
The teacher provided the student with the following table of
work functions for
selected metals.
Metal Work Function
(eV)
Na 2.28
Co 3.90
Pb 4.14
Ag 4.73
Pt 6.35
5
• Determine the values, with units, of the x-intercept and the y-
intercept.
102. Identify the significance of each of the intercepts. Use your
results to identify
the metal. Justify your answer. (3 marks)
(Title)
(y
–
a
xi
s)
(x – axis)