Two parallel wires run in a north-south direction. The eastern wire carries 15.0 A southward while the western wire carries 6.0 A northward. If the wires are separated by 30 cm, what is the magnetic field direction at a point between the wires at a distance of 10 cm from the western wire?
A. 3.0
T
B. 6.0T
C. 15T
D. 27T
E. 90T
D. 27T
Physics & Space Science
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A) once a year B) twice a year C) three times a year D) four times a year
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A box of graham crackers is labeled "120 Calories per serving." Assuming this means 120 kcal, and recalling that 4.16 J = 1 cal, the energy of a serving of the graham crackers is about
A. 5 × 104 J. B. 5 × 105 J. C. 4.2 × 103 J. D. 120 J.
Physics & Space Science
Standing waves are created by the interference of
A. two waves that don’t move B. two waves that move in opposite directions but create a pattern that is stationary C. a moving wave and the medium in which it travels D. light and sound waves
Physics & Space Science