Submitted by: Submitted by CzarlSpiral
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Category: Science and Technology
Date Submitted: 02/20/2012 08:15 AM
PHYSICS 1 Reviewer
Constants:
radius of the earth, Re = 6.37 x 106 m
mass of the earth, Me = 5.98 x 1024 kg
universal gravitational constant, G = 6.67 x 10-11 N-m2/kg2
I. Multiple Choice. Choose the best answer. Write letter E if the answer is not among the choices.
1. A measure of a quantity to which all other measurements of the same quantity is compared to is called the _____.
|A. unit. |B. standard |C. conversion factor. |D. meter. |
2. The speed limit of 42 mi/hr (where 1 mi = 1.61 km) in MKS units is _____.
|A. 18.78 m/s. |B. 0.77 m/s |C. 1126.30 m/s |D. 54.31 m/s |
3. The measure of a quantity that is defined to be exactly equal to 1.0 is called the _____.
|A. unit |B. standard. |C. conversion factor. |D. meter. |
4. The standard for time and length are presently based on ______, respectively.
|A. a meter-long pendulum, and a platinum-iridium meter stick.|C. a Cesium-133 atomic clock, and the orange light from |
| |Krypton-86. |
|B. a fraction of the mean solar day, and a fraction of the |D. a Cesium-133 atomic clock, and a fraction of the speed of |
|speed of light. |light |
5. A hectare is defined as 10.04 m2. Find the volume of earth material (in m3) removed from a 75.0-hectare open pit coal mine excavated to a uniform depth of 26.0 m.
|A. 2.60 x 106 m3. |B. 7.50 x 106 m3. |C. 1.95 x 103 m3. |D. 1.95 x 107 m3 |
6. Francis, a freshmen student, toured the campus on the first day of classes. He started from a classroom in St. Joseph Bldg.,...