The magnitude of the magnetic field at point P for a certain electromagnetic wave is 2.12 ?T. What is the magnitude of the electric field for that wave at P? (c = 3.0 × 108 m/s)
A) 745 N/C B) 636 N/C C) 5.23 µN/C D) 7.45 µN/C E) 6.36 µN/C
B
Physics & Space Science
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The Coulomb constant, k, has a value of 
The permittivity of free space,
has the units
A. 
B. N·m/C.
C. 
D. 
E. that are not given.
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Projectile Motion: For general projectile motion with no air resistance, the vertical component of a projectile's acceleration
A. is always zero. B. remains a non-zero constant. C. continuously increases. D. continuously decreases. E. first decreases and then increases.
Physics & Space Science
Name three differences between terrestrial and jovian planets
What will be an ideal response?
Physics & Space Science
To save energy while you leave your warm house for a half hour on a cold day, turn the thermostat
A) down. B) up. C) to room temperature.
Physics & Space Science