If a wave has a wavelength of 25.4 cm and a frequency of 1.63 kHz, its speed is closest to

A) 0.414 m/s
B) 41.4 m/s
C) 414 m/s
D) 41,400 m/s
E) 15.6 m/s


C

Physics & Space Science

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If ? = 8.0 V, at what rate is that emf providing energy to the circuit shown below?



a.
8.4 W

b.
7.6 W

c.
5.6 W

d.
11 W

e.
2.0 W

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A solid conducting sphere of 10 cm radius has a net charge of 40 nC. If the potential at infinity is taken as zero, what is the potential at the center of the sphere?

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