Which types of galaxies have a clearly defined spheroidal component?
A) spirals only
B) irregulars only
C) lenticulars only
D) ellipticals only
E) all but irregulars
E
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Both Jupiter and Saturn contain liquid metallic hydrogen
Indicate whether the statement is true or false
Two capacitors, C1 and C2, are connected in series across a source of potential difference. With the potential source still connected, a dielectric is now inserted between the plates of capacitor C1. What happens to the charge on capacitor C2?
A) The charge on C2 increases. B) The charge on C2 decreases. C) The charge on C2 remains the same.
What quantities does angular momentum depend upon?
A) mass and velocity B) mass, velocity, and radius C) force and radius D) force, velocity, and radius E) momentum and angular velocity
How does the heat energy from the Sun reach us through the vacuum of space?
a. conduction b. radiation c. convection d. none of the above choices are valid