An ideal solenoid of radius a has n turns per unit length and current I. The magnetic flux ?B through any circular area of radius a inside the solenoid, centered on and perpendicular to the solenoid axis, is
a.
.
b.
c
Physics & Space Science
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Quasars are____
a. spiral galaxies with unusually luminous nuclei b. elliptical galaxies with very broad emission lines c. explained by the double-exhaust model d. extremely luminous objects with high redshifts e. glowing green gases due to excitation from energy from an active core
Physics & Space Science
Temperature Scales: The temperature in your classroom is closest to
A. 68 K. B. 68°C. C. 50°C. D. 295 K.
Physics & Space Science
If Q = 16 nC, a = 3.0 m, and b = 4.0 m, what is the magnitude of the electric field at point P?
A. 33 N/C B. 31 N/C C. 24 N/C D. 19 N/C E. 13 N/C
Physics & Space Science
A car is moving with a constant speed along a circular track. The car is therefore not accelerating
Indicate whether the statement is true or false
Physics & Space Science