FINAL EXAM PHSC I -
This Final Exam supports the following Course Goals and Course Learning Outcomes:
Goal 1: To give you a reasonable knowledge of the basic concepts of physical science, including mechanics, astronomy, and more contemporary topics such as greenhouse effect, the ozone problem, and black holes.
Goal 2: To introduce you to the systematic problem-solving techniques.
Goal 3: To prepare you to use physical science in your own life and profession by providing interesting and relevant applications that are clearly understandable from physical principles.
CLO1: Demonstrate a fundamental knowledge of the basic laws and principles governing the nature of matter, motion, work and energy forms, fluids, waves, and special topics in astronomy: aligns with (Goal 1) (Goal 2) (Goal 3)
CLO2: Use a basic scientific vocabulary that relates to course content: aligns with (Goal 1) (Goal 2)
CLO3: Recognize and explain many physical phenomena observed in the physical environment: aligns with (Goal 1) (Goal 3)
CLO4: Use the scientific method in concert with the basic laws of physics to model, analyze, and interpret physical scenarios in the course materials to everyday life: aligns with (Goal 1) (Goal 3)
CLO5: Use simple mathematical skills to solve problems which pertain to the physical environment: aligns with (Goal 1) (Goal 2)
INSTRUCTIONS:
1. One of Saturn's moons has an orbital distance of 1.87 x 108 m. The mean orbital period of this moon is approximately 23 hours. Use this information to estimate a mass for the planet Saturn.
2. During a rain storm, rain comes straight down with a velocity Vi = -15 m/s and hits the roof of a car perpendicularly. The mass of the rain per second that strikes the roof is 0.060 kg every second. Assuming that the rain comes to rest upon striking the car (Vf = 0 m/s), find the average force exerted by the rain on the roof during a 3 second time interval.
3. A 15kg object is pushed to the right with a net force of 60N. If a 5kg object experiences the same acceleration, how much force is it being pushed with?
4. On a hot summer day (30 degrees Celsius), a pesky little mosquito produced its warning sound near your ear. The sound is produced by the beating of its wings at a rate of about 600 wing beats per second. What is the frequency in Hertz of the sound wave? What is the wavelength of the wave?
5. A man pushes a 50N box across a level floor at a constant speed of 2.0 m/s for 10 s. Find the average power output by the man.
6. A motorcyclist is trying to leap across a canyon by driving horizontally of the cliff that is 70.0 m high at 38.0 m/s. Ignoring air resistance, use energy conservation to find the speed with which the cycle strikes the ground at a height of 35.0m on the other side of the canyon. You do not need to know how wide the canyon is!
7. In a serious accident, a nuclear power plant's reactor vessel cracks, and all of the cooling water drains out. Although nuclear fission stops, radioactive decay continues to heat the reactor's 2.5 X 105 kg uranium core at a rate of 120 Mega-Watts. Once the core reaches its melting point, how much energy will it take to melt the core? How long will the melting take? Use the attached table.
8. What is a black hole? What is a singularity?
9. If the earth had twice its present radius and twice its present mass, what would happen to your weight? Explain. What is the relationship between the radius (R) of orbit of a satellite and its period (T)?
10. A horse pulls on a crate with a 1,000 N force, causing it to move at constant velocity. What is the acceleration of the cart? A 44-kg child steps onto a scale. What is the magnitude of the force that the scale exerts on the child?
11. What is resonance? Discuss examples of how resonance can be useful and harmful.
12. Suppose in a restaurant your coffee is served about 5 or 10 minutes before you are ready for it. If you want the coffee to be as hot as possible when you drink it, should you pour in the room temperature cream right away or when you are ready to drink the coffee?
13. Advertisements for a toy ball once stated that it would rebound to a height greater than the height from which it was dropped. Is this possible? Why or why not?
Attachment:- Table.rar