An older model car accelerates from rest to speed v in 10 seconds. A newer, more powerful sports car accelerates from rest to speed 2v in half the time (5 seconds). What is the ratio of the power of the newer car to that of the older car?
1.0.125
2.1.0
3.4.0
4.8.0
4
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An ionic compound composed of a cation other than H+ and an anion other than OH- is called a(n)
a. salt. b. precipitate. c. conjugate base. d. electrolyte.
Distinguish between longitudinal and transverse waves
What holds galaxy clusters together?
A. the strong force B. the cosmological constant force C. the electromagnetic force D. gravity E. the pressure from the cosmic background radiation
Equipotentials are lines along which
a. the electric field is constant in magnitude and direction. b. the electric charge is constant in magnitude and direction. c. maximum work against electrical forces is required to move a charge at constant speed. d. a charge may be moved at constant speed without work against electrical forces. e. charges move by themselves.