The distribution of Population II stars and globular clusters shows the Galaxy was more ________ in shape when it formed than it is now
Fill in the blank(s) with correct word
spherical or round
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A proton (mass = 1.67 × 10^-27 kg, charge = 1.60 × 10^-19 C) moves from point A to point B under the influence of an electrostatic force only. At point A the proton moves with a speed of 60 km/s. At point B the speed of the proton is 80 km/s. Determine the potential difference VB - VA
a. +15 V b. -15 V c. -33 V d. +33 V e. -20 V
Which of the following best explains why Jupiter’s density is higher than Saturn's?
a. Jupiter is more massive than Saturn. b. Jupiter has a higher proportion of hydrogen compounds and rock than Saturn. c. Jupiter is closer to the Sun than Saturn. d. Jupiter has a stronger magnetic field than Saturn.
The pressure in a liquid depends on liquid
A) density. B) depth. C) both of these D) none of the above
What is the power of a lens that has a focal length of -40 cm and a width of 2.0 cm?
A) -2.5 diopters B) -0.50 diopters C) +2.5 diopters D) +4.0 diopters E) -50 diopters