What produces a type-I supernova?
A) the collapse of the core of a massive star
B) the helium flash blows apart a giant's core
C) mass transfer onto a white dwarf pushing it over 1.4 solar masses
D) a nova igniting a helium flash in its red giant companion
E) the radioactive decay of nickel 56 into cobalt 56 into iron 56
C
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The magnetic field in a superconducting solenoid is 3.0 T. How much energy per unit volume is stored in the solenoid, in J/m3? ?0 = 4?× 10?7 T ? A/m
What will be an ideal response?
A gamma ray is another name for an electron
a. True b. False Indicate whether the statement is true or false
An electron and a proton, are released simultaneously from rest and start to move towards each other because of the attractive Coulomb force between them. They are initially separated by a distance d. The two particles eventually collide
When they collide, A) they are closer to the electron's initial position. B) they are at the midpoint of their initial separation. C) they are closer to the proton's initial position. D) Not enough data is given to predict where they collide.
A visual defect wherein a person can see nearby objects clearly but not distant objects is called
a. dispersion. b. destructive interference. c. farsightedness. d. nearsightedness.