Which of the following statements is true (only one)? a) Electricity use has fallen since 1975. b) Nuclear power use has increased since 1979. c) Oil use has increased more than any other fuel since 1940. d) We reached the point last year where we imported no oil. 2. Which of the following is a non-renewable resource? a) uranium b) wind c) solar d) hydro
- Which of the following statements is true (only one)?
- a) Electricity use has fallen since 1975.
- b) Nuclear power use has increased since 1979.
- c) Oil use has increased more than any other fuel since 1940.
- d) We reached the point last year where we imported no oil.
2. Which of the following is a non-renewable resource?
- a) uranium
- b) wind
- c) solar
- d) hydro
3. Which of the following is a renewable resource?
- a) oil
- b) coal
- c) wind
- d) uranium
4. The most significant aspect of world energy consumption over the last 50 years has been the
- a) growth of nuclear power
- b) increase in our fossil fuel reserves
- c) emphasis on energy conservation
- d) expanding use of oil.
5. If you started with $100 in the bank and you had $300 after letting it sit there for 5 years, what would be then annual interest rate you had received? ____________
6. If the growth rate of the number of solar collectors is 7% per year, in how many years will the number of solar collectors go from 1000 to 4000? ______________
7. The energy source most used in the U.S. is
- a) oil
- b) coal
- c) nuclear
- d) natural gas
8. If a constant force is applied to an object, the object will
- a) constantly accelerate
- b) have a constant velocity
- c) come to a stop
- d) can’t tell from information given
9. We talked about energy transformations in class. Write down the sequence of transformations involved in the striking of a match (and include what energy emerges from that act).
10. A force of 100 N is applied to a block of mass 5 kg sitting on a level, smooth (frictionless) surface. The acceleration experienced by the block is _____________.
11. A compact car has a head on collision with a Mack truck. Which experiences the greatest amount of force during the collision? Which experiences the greatest acceleration during the collision? Justify your answers. __________________________________________________.
12. An automobile starts from rest and accelerates down a level roadway. What enables to automobile to accelerate? Relate you answer to Newton’s laws of motion.
13. A net force of 100 N is applied to a block initially at rest on a level, smooth, surface and pushes it a distance of 20 meters. The amount of work done on the block by the force is _________________.
14. Referring to the previous question, how much kinetic energy does the block possess after being pushed for 20 meters? (Remember, it starts from rest.) ______________
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