Convert 14°F to K
A)
263 K
B)
287 K
C)
163 K
D)
-10 K
E)
474 K
A
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What allows a high-mass star to fuse different elements from a low-mass star?
A. Its greater mass means that it contains more elements. B. More mass means a stronger magnetic field that helps heavier elements fuse. C. High-mass stars spin slower and thus do not mix their fuels as well. D. More mass means more compression and thus a hotter core that allows heavier elements to fuse. E. The statement is false. Low-mass and high-mass stars can fuse the same elements.
Stars with multiple planets orbiting them are expected to be rare
Indicate whether the statement is true or false
All heavy elements are made during supernova explosions
Indicate whether the statement is true or false
A carpenter is driving a 15.0-g steel nail into a board. His 1.00-kg hammer is moving at 8.50 m/s when it strikes the nail
Half of the kinetic energy of the hammer is transformed into heat in the nail and does not flow out of the nail. What is the increase in temperature of the nail after the three blows that the carpenter needs to drive the nail in completely? The specific heat of steel is 448 J/kg ? K. A) 8.1 K B) 3.6 K C) 1.8 K D) 2.7 K E) 7.7 K