. . a) 1/2 . . b) T/4 . . c) T/2 . . d) 1/4

2. (1 point) Today is Saturday, May 20, 1995. What will the day of the week be on May 20, 1996?

. . a) Friday . . b) Saturday . . c) Sunday . . d) Monday

3. (1 point) Bloomington, Indiana is located at 86 degrees 31' West longitude, 39 degrees 14' North latitude. Our nation's capital is located at 77 degrees 02' West longitude, 38 degrees 50' North latitude. How much time lapses between solar noon at these two cities?

. a) 1 hour . b) 0 hour . c) 37 min 56 sec . d) 28 min 37 sec

4. (1 point) What time zone west of the prime meridian are you in right now?

. . a) 4 . . b) 5 . . c) 6 . . d) none of the above

5. (1 point) A sidereal day is how much longer than a solar day?

. a) 3 min 3 sec . b) 4 min 4 sec . c) 5 min 5 sec . d) none of the above

6. (1 point) How many degrees will the earth rotate while taking this 30 minute exam?

. a) 1 degree 00' . b) 45 degrees 00' . c) 7 degrees 30' . d) 15 degrees 00'

7. (1 point) What is the date of the next leap year day?

. a) 2/28/1996 . b) 2/28/2000 . c) 2/29/1996 . d) 2/29/2000

8. (1 point) In the Northern Hemisphere the sun rises in the east and sets in the west. In the Southern Hemisphere the sun

. a) rises in the north and sets in the south.
. b) rises in the west and sets in the east.
. c) rises in the east and sets in the west.
. d) does not shine.

9. (1 point) Consider a spring with a mass attached to the end and the spring is oscillating. How would increasing the mass on the end of the spring influence the frequency of oscillation?

. a) it would increase the frequency.
. b) it would decrease the frequency.
. c) it would have no effect.

10. (1 point) If you travel West from Bloomington, IN to Honolulu, HI, do you cross the International Date Line?

. . . . . . . Yes . . . . . . . No

11. (1 point) A wristwatch has a quartz crystal with a period of oscillation of 50 nanoseconds. What is the resonance frequency?

. a) 20 Kilohertz . b) 20 Megahertz . c) 20 Gigahertz . d) none of the above

12. (1 point) If, relative to some reference frame, you travel near the speed of light, how would you appear to an observer that is at rest in that reference frame.

. a) taller . b) fatter . c) thinner . d) uglier

13. (1 point) A local radio station broadcasts witha 3.109 meter wavelength. What frequency would you tune to listen to this station?

. a) 9.65 MHz FM . b) 96.5 MHz FM . c) 965 KHz FM . d) 965 KHz AM

14. (1 point) If it takes 8 minutes for light from the sun to reach the earth, how far away is the sun?

. a) 1.44X10^7 Km . b) 1.44X10^10 m . c) 1.44X10^13 cm . d) 1.44X10^13 mm

15. (1 point) On what day does the sun appear the highest in the sky in the Southern Hemisphere?

. a) Vernal Equinox . b) Summer Solstice . c) Autumnal Equinox . d) Winter Solstice

16. (3 points) The finer we divide the second, the more resolution our 'timepiece' has. If you have a mechanical timepiece which gains 15 seconds in 30 days, what is the percentage error this 15 second gain represents?
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17. (3 points) If you threw a 1 kg rock straight up and it lands 10 seconds later (assuming you moved out of the way) how high did it go?
(Neglect Friction)

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18. (3 points) A wall clock uses the 60Hz line voltage to drive its counter. If a particular clock has lost two hours in 5 days, what is the frequency of the line voltage?
.

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19. (3 points) Nist-7 is a cesium atomic clock located in Boulder, CO. This clock is the standard reference for our nation's time scale. It has an estimated accuracy of one part in 10^14. Assuming this estimate is correct, what is the minimum elapsed time in years before Nist-7 is inaccurate by 1 second?
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20. (5 points) The Global Positioning System (GPS) can be used to transfer time information via satellite. If each satellite can cover 90 degrees of longitude and 90 degrees of latitude, how many satellites are required to recieve timing information anywhere on earth?
.

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21. (5 points) An astronaut, who has a mass of 70 kg on earth, travels to an unknown planet. He constructs a simple pendulum 1 meter in length and measures its period to be 3 seconds. What is his weight on this planet?
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22. (5 points) Twin sisters are separated at birth. One sister remains on earth while the other sister travels on a spaceship at 2.4X10^8 m/s to the nearest star (Alpha Centuri, 4.1 light years away) and back. How old will each sister be when reunited back on earth?
.

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23. (5 points) Clypsedras, or water clocks, have been used at least since the time of ancient Greece. In fact the word kleptomania refers to stealers of time. Suppose you have an hourglass type which allows a 1/20 mL of water to drop every second. The bottom container of the vessel can hold one liter of water. If you started the clock at 12 noon, what time will it be (to the second) when the bottom container is full?
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