When a car goes around a curve of smaller and smaller radius, the centripetal force on it decreases
a. True
b. False
Indicate whether the statement is true or false
False
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Impedance: What resistance is needed in a series circuit with a 20-mH coil and 1.0-?F capacitor for a total impedance of 100 ? at 1.5 kHz?
A. 0.16 k? B. 82 ? C. 57 ? D. 18 ?
Which characterizes the magnetosphere/strength of magnetic fields on Jupiter?
A. the same as on Earth so that it has aurora B. completely absent C. weaker than that on Earth, but it still has aurora D. a thousand times that on Earth so that it cannot have aurora E. ten times stronger than Earth so that it has aurora
Two concentric conducting spherical shells produce a radially outward electric field of magnitude 49,000 N/C at a point 4.10 m from the center of the shells. The outer surface of the larger shell has a radius of 3.75 m
If the inner shell contains an excess charge of -5.30 ?C, find the amount of charge on the outer surface of the larger shell. (k = 1/4??0 = 8.99 × 109 N ? m2/C2)
Would we call a large earthquake or major volcanic eruption a natural disaster if no humans were killed or buildings destroyed?
What will be an ideal response?