The Sun's average surface (photosphere) temperature is about
A) 5,800 K.
B) 1,000,000 K.
C) 1,000 K.
D) 37,000 K.
A) 5,800 K.
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The mass of a galaxy's central black hole is proportional to the mass of its _______________
Fill in the blank(s) with correct word
Because the rotational inertia is higher, it is hardest in springboard diving to perform a forward somersault in
A. the tuck position (bending at both the waist and knees). B. the pike position (bending at the waist but not the knees). C. the straight position (no bending at knees or waist).
If the longest wavelength of light that is able to dislodge electrons from a metal is 373 nm, what is the work function of that metal, in electron-volts? (1 eV = 1.60 × 10-19 J, c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s)
What will be an ideal response?
An electron and a positron, which are two massive particles, can annihilate when they come together to produce two photons, which have no mass. According to special relativity, this pair annihilation is an example of __________
Fill in the blank(s) with correct word