1 of 4
Teaching Physics with the Physics Suite
Edward F. Redish
In this problem, you will use the
simulation "Charges and Fields"
from the University of Colorado's
PhET group. This program allows
you
1 of 2
Field and potential near points and sheets (solution)
8.2.P5
In the figure at the right are shown four configurations of charge labelled A, B, C, and
D. The small circles are meant to represent
1 of 2
The Faraday (solution)
8.1.P4
1. In chemistry, one often uses a unit of charge known as the Faraday, F, which has the magnitude of the charge of 1 mole of
electrons. How many Coulombs are there
1 of 2
Charge on a neuron (solution)
8.1.P2
A neuron is a body cell that functions to create and transmit electrical signals. To do this, it
uses chemical processes to maintain an electrical potential
1 of 2
Removing a bulb (solution)
8.5.P16
The circuit at the right has four identical light bulbs connected to an ideal battery (i.e., its internal resistance can be ignored). The bulbs are in
sockets
1 of 3
SHO variables (solution)
9.1.P19
A small cart with low friction wheels is attached to a
sturdy wall with a high quality spring that has negligible
internal damping. Use a coordinate system wher
1 of 1
Nernst potential essay (solution)
8.3.P7
The Nernst Potential is important to understanding how electrostatic charges distribute in cells and tissue. One example we have studied is a model
cell
Standing and traveling waves: Solution
In the figure at the right is shown
three graphs of the shapes of the
same taut elastic string in three
different circumstances, labelled
A, B, and C. In some of
1 of 2
Nernst potential toy model (solution)
8.3.P9
Consider the inside and outside of a cell, where the 8 nanometer thick cell membrane has a large number of open Na+ Ion channels. The major
contribu
Name_
University of Maryland
Department of Physics
Physics 132
Spring 2014
D. Buehrle
27 February 2014
Exam 1
Instructions:
Do not open this examination until the proctor tells you to begin.
1. When t
1 of 1
Diatomic vibrations (solution)
9.1.P5
The graph below shows data taken on the position of a small massive cart attached to a spring as
shown in the figure at the right.
A. Find the period (T),
Problem Solution PE40
Teaching Physics with the Physics Suite
Edward F. Redish
The
bulldog on the skateboard
In the three figures
labeled A, B,
and C at the right are shown three
situations in which
a
The resonance simulation: Solution
The PhET simulation team have a
simulation that shows a mass on a
spring being driven by an oscillating
base as shown in the figure at the
right. You can access this
1 of 2
Capacitance in nerve cells (solution)
8.4.P1
A nerve cell or neuron communicates with other nerve cells through a long "process" (this neuroscience technical term to mean something
extended out
1 of 1
The power of a nerve (solution)
8.4.P3
In the propagation of an electrical pulse along a non-myelinated nerve axon electrical energy stored in the axon's capacitance (i.e., in the
separation of
1 of 2
Molecular polymorphism (solution)
7.4.P7
The biological roles of complex organic molecules are determined by their shape - the way atoms and electrons create charge distributions on the
molecul
1 of 2
Modeling a nerve membrane (solution)
8.5.P4
As a result of a complex set of biochemical reactions, the cell membrane of a nerve cell pumps ions (Na+ and K+) back and
forth across itself, thereb
1 of 1
Comparing capacitors 3 (solution)
8.4.P4B
In the figure below are shown four identical capacitors and two identical batteries connected in series and parallel. ranking the variables for the
fou
1 of 1
Both ions moving
8.5.P3
We have discussed the motion of electrons in a conductor and the conditions under which Ohms law arises in a resistor. But there are other
situations in which potential
1 of 2
Thinking about an ammeter and a voltmeter (solution)
8.5.P14
An ammeter is an instrument that shows how much current passes through it. It is designed to have a small resistance. The following
1 of 3
Capacitors in series and parallel (solution)
8.4.P5
A capacitor is a device for storing electrical energy in the form of a
separation of opposite charges. Since these opposite charges attract a
1 of 2
Comparing the mass-on-spring and pendulum: 2 (solution)
9.1.P22
Below is shown the graph of the x position measured by a sonic ranger but the origin is shifted so that the 0 of the coordinate o
1 of 2
Comparing the mass-on-spring and pendulum: 2 (solution)
9.1.P22
Below is shown the graph of the x position measured by a sonic ranger but the origin is shifted so that the 0 of the coordinate o
Name_
University of Maryland
Department of Physics
Physics 132
Spring 2017
Prof. Dorland
April 20, 2017
Exam 2
Instructions:
Do not open this examination until the proctor tells you to begin.
1. When
Charge on a neuron (solution)
8.1.P2
Aneuronisabodycellthatfunctionstocreateandtransmitelectricalsignals.Todothis,ituses
chemicalprocessestomaintainanelectricalpotentialdifferenceacrossitscellmembrane
University of Maryland
Department of Physics
Physics 132
Spring 2016
Exam 2 (Sample Exam) Solution
Dr. B. Dreyfus
April. 2016
f) V0 = VA + VC
1. (25 points) In the circuit shown at the
Explanation: Th
University of Maryland
Department of Physics
Physics 132
Spring 2013
Exam 1 (Makeup) Solution
1. (25 points) 1.1 (5 pts) If you flip a fair coin 12 times, which string of
heads and tails are you more
Name_
University of Maryland
Department of Physics
Physics 132
Spring 2017
Prof. Redish
3.March. 2017
Exam 1
Instructions:
Do not open this examination until the proctor tells you to begin.
1. When th
Name_
University of Maryland
Department of Physics
Physics 132
Fall 2014
D. Buehrle
2October 2014
Exam 1
Instructions:
Do not open this examination until the proctor tells you to begin.
1. When the pr