- 6. Infer A communications satellite stops working while in orbit, and a surge in an electric power line causes blackouts in cities across a large region. What probably happened in the Sun's atmosphere shortly before these events?
- __ 16. In what type of circuit do electrons follow one path from the source, to a load, and back to the source? a. short circuit d. series circuit b. open circuit e. connected circuit c. parallel circuit __ 17. Kirchoff's voltage law states that in a complete circuit, a. All paths in a circuit have equal voltage increases. b. The sum of voltages of the loads in a loop equals the voltage of the energy source. c. All electrons must travel the same path. d. Electrons provide the necessary voltage for the circuit to operate. e. The voltage is equal to the energy divided by the current. __ 18. A bar magnet is placed on a flat surface, with its N-pole on the right.The magnetic field above and below the bar magnet point: a. upward d. from left to right S N b. downward e. outward in all directions c. from right to left
- 10. If 90 kg of Cobalt 60 decays to 3.9 kg in 24 years, what is the half life?
- 1. Define uniform motion and provide a real-world example. Occars when an object pures at complicht speed 2. Explain the difference between distance and displacement. Distance is He foral legit of Her palk reweled 3. Describe how you can distinguish between speed and velocity using examples. 4. Why is displacement a vector quantity, but distance is a scalar quantity? 5. What kind of graph would I you expect for the velocity of an object in uniform motion? Part B: Numerical Problems 1. A car travels 240 km north in 4 hours. a) What is the speed of the car? - b) What is the velocity of the car? 2.A train moves at a constant speed of 80km/h for 3 hours. How far does it travel?
- Fusion of hydrogen isotopes Which of the following best describ rence between nuc Fission means splitting atoms while fu.......mans combining atoms. Fusion means splitting atoms while fission in eans combining atoms. Only nuclear fission produces energy. Only nuclear fusion produces energy. The Radium Girls suffered damage to many parts of their bodies , especially thei Calcium D Zinc Oxygen Iron
