The sidereal drive on a telescope mounting must turn the telescope eastward about the polar axis
Indicate whether the statement is true or false
F
You might also like to view...
Our understanding of the solar system has come in a way that can best be described as:
A) constant since prehistoric times. B) slow and steady since the discovery of the telescope by Galileo. C) erratic, with spurts when new planets were found. D) steady until the last decade, when the decline in the space program slowed it a great deal. E) explosive, with us learning more in the past few decades than in all previous history.
According to the Maxwellian speed distribution, as the temperature increases the most probable speed:
A. increases B. decreases C. increases at high temperatures and decreases at low D. decreases at high temperatures and increases at low E. stays the same
A metallic surface is illuminated with light of wavelength 400 nm
If the work function for this metal is 2.40 eV, what is the maximum kinetic energy of the ejected electrons, in electron-volts? (1 eV = 1.60 × 10-19 J, c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s)
A music tuner uses a 554-Hz C# tuning fork to tune the frequency of a musical instrument. If the tuner hears a beat frequency of 2 Hz, what is the frequency of the instrument?
A) It must be 556 Hz. B) It must be 552 Hz. C) It could be either 556 Hz or 552 Hz. D) It could be either 553 Hz or 555 Hz. E) It is neither 556 Hz or 552 Hz.