A charge of 0.80 nC is placed at the center of a cube that measures 4.0 m along each edge. What is the electric flux through one face of the cube?
A. 90 N ? m2/C
B. 15 N ? m2/C
C. 45 N ? m2/C
D. 23 N ? m2/C
E. 64 N ? m2/C
Answer: B
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As a car moves forward on a level road at constant velocity, the total force acting on the tires is:
a. greater than the normal force times the coefficient of static friction. b. equal to the normal force times the coefficient of static friction. c. the normal force times the coefficient of kinetic friction. d. zero.
Electromagnetic waves with a wavelength of about 0.1 nm (about the size of an atom) are in which range?
A. Radio B. Microwave C. Infrared D. Visible E. Ultraviolet F. X-ray T. Gamma ray
The Balmer series does not lie in the visible region of the electromagnetic spectrum
Indicate whether the statement is true or false
If the world grows more food than it needs, how can there be famines? Explain
What will be an ideal response?