Applications to Astronomy: Many supernovas are thought to result in
A. neutron stars.
B. red giant stars.
C. regular stars like our sun.
D. white dwarfs.
Answer: A
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___________ have elongated nuclei with spiral structure extending from the ends of the elongations. The Milky Way is a member of this class of galaxy
a. Spiral galaxies b. Barred spiral galaxies c. Elliptical galaxies d. Irregular galaxies e. S0 galaxies
The shortest wavelength of visible light is approximately 400 nm. Express this wavelength in centimeters
A) 4 × 10-5 cm B) 4 × 10-7 cm C) 4 × 10-9 cm D) 4 × 10-11 cm E) 400 × 10-11 cm
The figure shows a 100-kg block being released from rest from a height of 1.0 m. It then takes it 0.90 s to reach the floor. What is the mass m of the other block? The pulley has no appreciable mass or friction
A) 60 kg B) 54 kg C) 48 kg D) 42 kg
The star-gas-star cycle will continue forever because stars are continually recycling gas
Indicate whether the statement is true or false