The circuit below contains 4 100-W light bulbs. The emf is 110 V. Which light bulb(s) is(are) brightest?
a.
A
b.
B
c.
C
d.
D
e.
C and D
b
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Which of the following statements about our Sun is not true?
A) The Sun's diameter is about 5 times that of Earth. B) The Sun is a star. C) The Sun contains more than 98% of all the mass in our solar system. D) The Sun is made mostly of hydrogen and helium.
White dwarfs have magnetic fields as much as 100 million times larger than Earth's magnetic field.
Answer the following statement true (T) or false (F)
A series of 3 uncharged concentric shells surround a small central charge q. The charge distributed on the outside of the third shell is
A. ?3q. B. ?(ln 3)q. C. +q. D. +(ln 3)q. E. +3q.
All nuclei of a given element have the same number of neutrons
Indicate whether the statement is true or false