A point charge of 3.0 ?C is located on the y-axis at y = 4.0 m, and another point charge of 6.0 ?C is located on the x-axis at x = 5.0 m. What is the magnitude of the electric field at the position (5.0 m, 4.0 m)?
a. 
b. 
c. 
d. 
e. 
b.
Physics & Space Science
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As temperatures become large, the denominator in equation T4.41 becomes
A. very large. B. very small. C. approximately 1. D. approximately ?1
Physics & Space Science
Six seconds after starting from rest, a freely-falling baseball has a speed of
A) 10 m/s. B) 30 m/s. C) 60 m/s. D) 70 m/s.
Physics & Space Science
Tsunami are correctly referred to as
A) seismic sea waves. B) tidal waves. C) energy waves. D) mega waves.
Physics & Space Science
Which of the following statements is true?
A. Even though X-rays have higher energy, they move with the same speed as that of visible light. B. X-rays have higher energy, but still they move slower than visible light. C. X-rays have higher energy, hence they move faster than visible light. D. None of these choices are correct.
Physics & Space Science