Directions: It is important that you provide
answers in your own words. Please focus
only on information from the text/eBook to create your own solutions.
Please do not use direct information from an outside source (especially copying
and pasting from an “answer” website). Use of direct information from an
outside source is against school policy. All answers will be checked for plagiarism. Instances of plagiarism can result in probation or possible
dismissal from the school.
Please be sure to follow all guidelines (number of sentences/showing all
calculations) and to provide the correct metric units of measure. All questions are 3.33 points. You MUST include units on all your answers.
math based questions you must show all your work and explain any numbers that
are not clearly understood by the problem.
There is a formula sheet for you to use at the end of the exam.
How is electric potential
energy similar to gravitational potential energy? How is it different? Where will an electron bound in an atom and
have the largest electrical potential energy?
What is a transformer? Explain how a transformer works including
specific details on step up and step down transformers.
Write at least 4 to 5
sentences on the different measurements that helped to calculate the speed of
light. There are 3 specific experiments
mentioned in your textbook.
What caused magnetic
fields? What happens If you keep
breaking a magnet in two until you reach a single atom?
What is an electric
motor? Explain its operation.
State Hooke’s law. A spring will stretch 12 cm when a 250-g mass
is hung on it. If the 250-g mass is hung
on two identical springs, hung sided by side, and both support the 250-g mass,
how much will each spring stretch.
Use 4 to 5 complete sentences,
explain the concepts of beats and how beats are produces. Please provide at least 2 examples.
Why do atoms have
relatively the same size even though they may have widely different masses?
What is the period of a
soundwave whose wavelength is 20.0 m?
Use values from the book and show ALL of your work.
A 60-V potential different
is applied across a parallel combination of a 10-ohm and 20-ohm resistor. What is the current in the 10-ohm resistor? Show your work.
What is the power
dissipated by a toaster that has a resistance of 60 ohms and is plugged into a
120-V outlet? Show your work.
A step up transformer has
250 turns on its primary and 500 turns on it secondary. When the primary is connected to a 200 V and
the secondary is connected to a floodlight that draws 5A, what is the power
output? Please show ALL of your work.
What is the mass of air in
a room that has dimensions of 10m x 20m x 4 m?
Use values from the book to show your work.
About how much pressure do
the feet of a 6000-kg elephant exert on the ground? Assume each foot has an area of 0.10 square
meter. Please show all your work.
The temperature of an
object is raised by 90oC. This is equivalent to what
increase in its absolute temperature?
A supersonic aircraft
produces a shock wave that describes a 30o angle. What happens to
the angle of the cone as the aircraft travels faster?
A 2.0-ohm resistor is
connected in a series with a 20.0 -V battery and a three-branch parallel
network with branches whose resistance are 8.0 ohms each. Ignoring the battery’s internal resistance,
what is the current in the batter? Show
Gas A is composed of
diatomic molecules (two atoms to a molecule) of a pure element. Gas B is composed of monoatomic molecules
(one atom to a molecule) of another pure element. Gas A has three times the mass of an equal
volume of gas B at the same temperature and pressure. How do the atomic masses of elements A and B
Consider a model steel
bridge that is 1/100 the exact scale of the real bridge that is to be
If the model bridge weighs
50 N, what will the real bridge weigh?
If the model bridge does
not appear to sag under its own weight, is this evidence the real bridge, built
exactly to scale, will not appear to sag either?
Calculate the water
pressure in the pipes at the bottom of a high-rise building that is fed by
reservoir 60 m above the roof top.
The atmosphere does not
ordinarily crush cans. However, it will crush a can after it has been heated,
capped, and cooled. Explain why this
happens. Be sure to use complete sentences
When a 57-gram piece of
aluminum at 100oC is placed in water, it loses 735 calories of heat
while cooling to 30oC.
Calculate the specific health capacity of the aluminum.
Your classmate says that if
all the molecules in a particular liquid had the same speed, and some were able
to evaporate, the remaining liquid would not undergo cooling. Do you agree or disagree and what is your
explanation to support your answer.
Would it be correct to say
the Doppler Effect is the apparent change in the speed of a wave due to the
motion of the source? Be sure to fully explain your position using at least 3
complete content related sentences.
The equation E=hf describes
the energy of each photon in a beam of light.
If Planck’s constant, h, were larger, would photons of light of the same
frequency be more energetic or less energetic.
Be sure to explain using at least 3 content related sentences.
A radioisotope is place
near a radiation detector, which registers 80 counts per second. Eight hours later, the detector registers
five counts per section. What is the
Write the nuclear equation
that describes the following process. Uranium-235 undergoes an alpha decay to
If the uranium nucleus were
split into three pieces of approximately the same size instead of two, would
more energy or less energy be released? Defend your answer in terms of Figure
40.14 in your textbook.
According to chapter 30 in
the course textbook, describe the time it would take for Earth to orbit the
collapsed sun if the sun collapsed into a black hole.
Formula Sheet (this is not finished yet)
P = F/A
Pressure: P = dgh