____ supernovae are caused by the collapse of an iron core in a high mass star
a. Only type Ia
b. Only type Ib
c. Only type II
d. type Ia and type II
e. type Ib and type II
e
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A point charge Q is placed on the x axis at x = ?2.0 m. A second point charge, ?Q, is placed at x = 1.0 m. If Q = 60 ?C, what is the magnitude of the electrostatic force on a 40-?C charge placed at the origin?
A. 16 N B. 27 N C. 32 N D. 11 N E. 3.0 N
There is direct evidence for the discreteness of energy levels in atoms
What will be an ideal response?
Bulk Modulus: A 12-L volume of oil is subjected to pressure which produces a volume strain of -3.0 × 10-4. The bulk modulus of the oil is 6.0 × 109 Pa and is independent of the pressure. The change in the pressure of the oil in megapascals is closest to
A. 1.2 MPa. B. 1.4 MPa. C. 1.6 MPa. D. 1.8 MPa. E. 2.0 MPa.
If you add 1.33 MJ of heat to 500 g of water at 50°C in a sealed container, what is the final temperature of the steam?
The latent heat of vaporization of water is 22.6 × 105 J/kg, the specific heat of steam is 2010 J/kg ? K, and the specific heat of water is 4186 J/kg ? K. A) 100°C B) 112°C C) 123°C D) 147°C E) 195°C