PHYS3070/ENVS3070
Homework #9
due at 0900 Monday April 21, 2014
1. (15) If I invest $5billion to build a nuclear power plant that will operate for and be paid off
in 40 years, how much per year will my mortgage payments be to pay the initial capital
cost
ENVS3070/PHYS3070
Home Work #4
due in class at 0900 Monday March 3
1. (5 points) A step-up transformer with 60 Hz AC power has an input voltage of 1000 V
at a current of 2 Amperes. The output voltage is 5000 Volts. What is the current
flowing out of the t
(8 points) 1a) Energy (Joules)=Power(60 Watts) * Time (seconds)=60 J/sec*10 min * 60
sec/min = 36,000 J
b) One calorie (note the lower case) = 4.184 Joules (text, inside front cover)
36,000 J / (4.184 J /cal)=8604.2065 cal = 8.604 Cal (kilocal)
(ok to say
ENVS3070/PHYS3070 Exam 1
February 17, 2014
version
B(blue)
Name(printed clearly)_I. M. Korrekt_ Signature_
Multiple choice (5 points each)
Pick the exact or closest answer.
1a) If your building needs 2000 Btu per hour to stay warm at 70 deg F, how much el
ENVS3070/PHYS3070 Homework #2, (oil and gas) due in class Monday February 3. 2014
1.(10 points) Imagine that we can get all of the oil out of the oil shale deposits of the Green
River Formation (Table 2.8). The US currently consumes 19 million bbl of oil
ENVS3070 / PHYS3070 Homework three, due in class Monday February 17. Notethere are a
lot of points on this homework set!
1.The Fischer-Tropsch process turns coal (carbon=C) into gasoline=octane (=C8H18) by a
series of chemical reactions. The first reactio
ENVS3070/PHYS3070
A
Exam 2
18 March 2014
Name(printed clearly)_O.K. answers_ signature_
1. Multiple choice (5 points for each right answer, -3 points for every wrong answer. Do not
guess!)
A. If a very streamlined 3000 pound car doubles its speed from 15
ENVS3070 / PHYS3070 Homework three, due in class Monday February 17. Notethere are a
lot of points on this homework set!
1. The Fischer-Tropsch process turns coal (carbon=C) into gasoline=octane (=C8H18) by a
series of chemical reactions. The first reacti
Solutions for
HW #5 due in class at 0900 Monday March 10
1. (10)The US burns one billion (109) tons of coal each year, and 1% of this by weight is
sulfur. How many tons of SO2 would we dump into the air each year if nothing were
done about this? You will
Homework #7 due at 0900 Monday March 31
1.The Valmont plant provides 229 MW of electricity to us. How many square meters of solar
panels would be required in Boulder to replace all of this power? Assume some suitable
storage system to smooth out the fluct
ENVS3070/PHYS3070 Home Work #8 due 0900 Monday April 14
1.(30 points) A proposed High Temperature Gas Cooled nuclear fission reactor would operate
at a temperature of 800 deg C. This facility will be built by the sea, with cooling at 10 deg C.
A. (5) What
ENVS3070/PHYS3070 Homework #6 due 0900 Monday 17, 2014
1. (10) If the world burns 8 billion tons of coal this year, and coal is 60% carbon, how many
tons of CO2 will we dump into the atmosphere this year? The atmosphere has a mass of
5.7x1015 English tons
HW #5 due in class at 0900 Monday March 10
1. (10)The US burns one billion (109) tons of coal each year, and 1% of this by weight is sulfur.
How many tons of SO2 would we dump into the air each year if nothing were done about this?
You will need a chemica
ENVS3070/PHYS3070
Home Work #4
due in class at 0900 Monday March 3
1. (5 points) A step-up transformer with 60 Hz AC power has an input voltage of 1000 V
at a current of 2 Amperes. The output voltage is 5000 Volts. What is the current
flowing out of the t
ENVS3070/PHYS3070 Homework #2, (oil and gas) due in class Monday February 3. 2014
1.(10 points) Imagine that we can get all of the oil out of the oil shale deposits of the Green
River Formation (Table 2.8). The US currently consumes 19 million bbl of oil
HW #1 due at the beginning of class Wednesday January 22. All further homework is due in
class every Monday.
1. ( 8 points) R and K Problem 1.8, amplified
A bicyclist on a flat road expends energy at the rate of 60 Watts while traveling at a steady
speed
ENVS3070/PHYS3070 Homework #6 due 0900 Monday 17, 2014
1. (10) If the world burns 8 billion tons of coal this year, and coal is 60% carbon, how many tons
of CO2 will we dump into the atmosphere this year? The atmosphere has a mass of 5.7x10 15
English ton
Homework #7 due at 0900 Monday March 31
1.The Valmont plant provides 229 MW of electricity to us. How many square meters of solar
panels would be required in Boulder to replace all of this power? Assume some suitable
storage system to smooth out the fluct
ENVS3070/PHYS3070 Home Work #8 due 0900 Monday April 14
1.(30 points) A proposed High Temperature Gas Cooled nuclear fission reactor would operate
at a temperature of 800 deg C. This facility will be built by the sea, with cooling at 10 deg C.
A. (5) What
PHYS3070/ENVS3070
Homework #9
due at 0900 Monday April 21, 2014
1. (15) If I invest $5billion to build a nuclear power plant that will operate for and be paid off
in 40 years, how much per year will my mortgage payments be to pay the initial capital
cost
Homework 10
1.
due at 0900 Monday April 28
If the EPA issues cap and trade permits or adds a carbon tax, spewers of CO2 will have
to pay $40/ ton (English short ton=2000 pounds) of CO2.
A. (5) How much is this in terms of dollars per ton of carbon in the