1) Satellite X and Satellite Y orbit the earth. The distance between X and the Earth is 8 times greater than the distance between Y and the earth. Using Kepler's Laws, the period of satellite X is what factor times the period of satellite Y?
R is the distance between satellite Y and the earth...
Swimming at 0.15 m/s relative to still water, a swimmer heads directly across a 100-m-wide river. He arrives 50 m downstream from a point directly across the river from his starting point.
a) What is the speed of the current in the river?
b) In what direction should the swimmer head so as to...
Ok, these are my answers:
1. C
2. True
3. True
4. False
5. D
6. D
7. A
8. A
9. A
10. B
11. A
12. True
13. C
14. B
15. C
16. B
17. D
18. D
If they're wrong, can you confirm why?
I tried reading my textbookfor the answers to these questions, but I can't find an answer. Can someone answer these questions?
1. Changing the magnetic field intensity in a closed loop of wires induces
A. Current
B Voltage
C. Both
D. Neither
2. True or False: Energy emitted by...