The photosphere is about 100 times the diameter of the Earth
Indicate whether the statement is true or false
TRUE
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If one lawn mower causes an 80-dB sound level at a point nearby, four lawnmowers together would cause a sound level of ____________ at that point
a. 92 dB b. 84 dB c. 86 dB d. none of the above
Food cooked in a microwave oven depends on electrical
A) conduction. B) charge polarization. C) resistance changes. D) field strength. E) all of the above
An electron is confined in a harmonic oscillator potential well. What is the longest wavelength of light that the electron can absorb
if the net force on the electron behaves as though it has a spring constant of 74 N/m? (mel = 9.11 × 10-31 kg, c = 3.00 × 108 m/s, 1 eV = 1.60 × 10-19 J, h = 1.055 × 10-34 J ? s, h = 6.626 × 10-34 J ? s) A) 200 nm B) 230 nm C) 220 nm D) 210 nm
Determine the rms voltage drop across the inductor in the circuit
a.
11 V
b.
27.5 V
c.
33 V
d.
38.5 V
e.
30.5 V