If a star has a parallax of 0.25", then its distance is about 13 light-years
Indicate whether the statement is true or false
TRUE
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The Hertzsprung-Russell Diagram plots ________ against the spectral type or temperature
A) distance B) luminosity or absolute magnitude C) brightness or apparent magnitude D) size or density E) mass
An atomic nucleus has a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the center of the nucleus? (k = 1/4??0 = 8.99 × 109 N • m2/C2, e = 1.60 × 10-19 C)
A) 5.4 × 10-8 N/C B) 5.6 × 10-8 N/C C) 5.8 × 10-8 N/C D) 6.0 × 10-8 N/C E) 6.2 × 10-8 N/C
An artificial satellite in a low orbit circles the earth every 98.0 minutes. What is its angular speed in rad/s?
What will be an ideal response?
Three different resistance lightbulbs are connected to a 120-V outlet. The most power will be consumed by the circuit
A. when the most resistive bulb is in parallel with a series of the other two. B. when the bulbs are in parallel. C. when the bulbs are in series. D. when the least resistive bulb is in parallel with a series of the other two. E. The arrangement is unimportant because the voltage is the same in all cases.