The more massive a white dwarf, the
A) higher its temperature.
B) smaller its radius.
C) larger its radius.
D) higher its luminosity.
B
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Normal matter is baryonic
a. True b. False Indicate whether the statement is true or false
Centaurus A is a radio galaxy that has a visible galaxy at the center. This central elliptical galaxy of Centaurus A is encircled by a ring of gas and dust, different from most elliptical galaxies. The dust ring orbits about an axis that is perpendicular to the axis of rotation of the elliptical galaxy. What does this suggest about this central elliptical galaxy of Centaurus A?
a. The radio jets have caused the dust disk to be driven around the elliptical galaxy. b. There are at least two black holes at the center of the elliptical galaxy. c. Centaurus A is probably the result of a merger of an elliptical galaxy and a spiral galaxy. d. Dust is produced as the jets interact with the intergalactic medium. e. Elliptical galaxies often contain dust that forms a disk along their rotation axis.
If your mass is 60kg on Earth, what would you mass be on the moon?
What will be an ideal response?
A constant-volume gas thermometer is used to measure the temperature of an object. When the thermometer is in contact with water at its triple point (273.16 K) the pressure in the thermometer is 8.500 × 104 Pa. When it is in contact with the object the pressure is 9.650 × 104 Pa. The temperature of the object is:
A. 37.0 K B. 241 K C. 310 K D. 314 K E. 2020 K