A charge of 50 nC is uniformly distributed along the y axis from y = 3.0 m to y = 5.0 m. What is the magnitude of the electric field at the origin?
a. 18 N/C
b. 50 N/C
c. 30 N/C
d. 15 N/C
e. 90 N/C
C
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What is the frequency (in Hz) of the resultant wave?
A. 300 B. 48 C. 8 D. 0.8 E. 150
A planet is most likely to have tectonic activity if it has
A) high surface gravity. B) high internal temperature. C) a dense atmosphere. D) low surface gravity. E) low internal temperature.
Beta rays can penetrate
A) air only. B) a piece of paper. C) several millimeters of aluminum. D) several centimeters of lead. E) several meters of iron.
A series RC circuit has a time constant of 0.900 s. The battery has an emf of 24.0 V, and the maximum current in the circuit is 0.500 mA.What is the capacitance?
a. 1.80 ?F b. 43.2 ?F c. 18.8 ?F d. 53.3 ?F