If the voltage applied to a parallel-plate capacitor is doubled, the electric field between the plates
A)
is halved.
B)
quadruples.
C)
is tripled.
D)
remains the same.
E)
is doubled.
E
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Free Fall: Ball A is dropped from the top of a building. One second later, ball B is dropped from the same building. Neglect air resistance. As time progresses, the difference in their speeds
A. increases. B. remains constant. C. decreases. D. cannot be determined from the information given.
Answer the following statement(s) true (T) or false (F)
If the value of h were bigger, it would be easier to display quanton interference effects.
Imagine that you are trying to stop neutrinos with a lead shield. How thick would you need to make this shield to ensure that it can stop an average neutrino?
A) about one meter B) about 700,000 kilometers (the radius of the Sun) C) about 150 million kilometers (the size of an astronomical unit) D) about one light-year E) about 14 billion light-years (the size of the observable universe)
The formula can be used to calculate a star's _____
a. mass b. distance c. rotation speed d. revolution period e. diameter