A +5.0-µC point charge is 12 cm from a -5.0-µC point charge. What is the magnitude of the electric field they produce at the point on the line connecting them
where their electric potential (relative to infinity) is zero? (k = 1/4??0 = 9.0 × 109 N ? m2/C2)
A) 0 N/C
B) 12.5 MN/C
C) 0.75 MN/C
D) 25 MN/C
E) 1.5 MN/C
D
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Experiments allow physicists today to reproduce (on very small scales) energy and temperature conditions thought to have prevailed in the early universe as far back in time as about
A) one ten-billionth (10-10) of a second after the Big Bang. B) 380,000 years after the Big Bang. C) 10-45 seconds after the Big Bang. D) 10 billion years ago.
A 5.00 kg object has a moment of inertia of 1.20 kg 
What torque is needed to give the object an angular acceleration of 2.0 
A. 2.4 N•m B. 2.6 N•m C. 2.8 N•m D. 3.0 N•m E. 3.2 N•m
At point P3?
A. A B. B C. C D. D E. AA F. BB G. CC H. DD
The magnitude of the magnetic field inside a solenoid is inversely proportional to the current flowing through the solenoid
Indicate whether the statement is true or false