A coulomb of charge flowing in a bulb filament powered by a 6-volt battery is provided with
A) 6 ohms.
B) 6 amperes.
C) 6 joules.
D) 6 watts.
E) 6 newtons.
Answer: C
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Earth's magnetism demonstrates that:
A) part of Earth's core must be a liquid metal. B) Earth's core is completely made of nickel. C) a large part of Earth's crust is made up of metal. D) Earth's crust is mainly composed of magnetic material.
Light travels for about ________ to reach the Sun's surface from the Sun's core, and about ________ to reach Earth from the Sun's surface.
A. 1 minute; 8 seconds B. 100 years; 8 minutes C. 100 years; 8 seconds D. 16 million years; 8 minutes
If a white dwarf gains sufficient mass, it can become a:
A) brown dwarf. B) type II supernova. C) type I supernova. D) planetary nebula. E) black dwarf.
How would you describe the volume of the following object?
the amount of water in a swimming pool A) microscopic B) macroscopic C) submicroscopic D) all of the above E) none of the above