Exam (elaborations)
PHYS 143 Midterm 1 Questions And Answers Latest Update
- Course
- PHYS 143
- Institution
- University Of Illinois - Urbana-Champaign
PHYS 143 Midterm 1 Questions And Answers Latest Update
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PHYS 143 Midterm 1 QuestionsAnd Answers Latest Update
Energy ANS✔✔ the capacity to do work
Newton-meter(Joule)
Velocity ANS✔✔ m/s
Acceleration ANS✔✔ m/s^2 rate of change of velocity
Force ANS✔✔ m*a
kg*m/s^2
Power ANS✔✔ the rate at which work is done
Joules/sec
1 Kilowatt-hour is about.. ANS✔✔ 3.6x10^6 Joules
1 British Thermal Unit (BTU) is... ANS✔✔ 1000 Joules
1 Calorie is ANS✔✔ 4 Joules
1 Food Calorie is... ANS✔✔ 1000 calories
,1 Foot-pound is... ANS✔✔ 1.35 Joules
1 electron volt (eV) is... ANS✔✔ Unit of energy equal to 1.6 x 10^-19 joules,
used to quantify energy transfers on the atomic scale
Work ANS✔✔ force x distance(Joules)
Kinetic Energy ANS✔✔ energy of motion
1/2mv^2
gravitiational potential energy ANS✔✔ the energy an object has due to its
position above Earth, energy due to its height.
mgh
Heat ANS✔✔ Usually quantified by BTUs Kinetic energy on a microscopic
scale.
Which country has the highest, per capita, oil consumption? ANS✔✔ Saudi
Arabia
How much of our energy is lost upon processing? ANS✔✔ Almost 50%
Does the U.S consume energy at a higher rate than it produces it? ANS✔✔
Yes it does.
, Petroleum ANS✔✔ A broad term which includes both crude oil and natural
gas
Crude Oil ANS✔✔ a liquid mixture of naturally occurring hydrocarbons
(compounds containing carbon and hydrogen).
Natural Gas ANS✔✔ A gaseous mixture of naturally occurring
hydrocarbons.
Which fossil fuel does China have the most of? ANS✔✔ Coal.
What is the origin of oil and gas? ANS✔✔ Organic matter which lies, buried,
in the Earth for millions of years. The change in temperature and pressure over
time change the composition of the matter, turning it into oil and gas.
Seismography ANS✔✔ Soundwaves that give information on the anisotropy
and density in the Earth or sea.
Tar pits ANS✔✔ Oil deposits deep in the earth. Changes in the pressure
allow the oil to bubble up to the surface.
When was oil discovered in the US. ANS✔✔ Titusville, Pennsylvania (1859)
This was the first oil well
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