Europa's visible surface:
A) contains a very clean liquid.
B) contains several craters.
C) has long cracks in its icy crust.
D) has a terrain resembling a liquid stream.
C
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In each of the following situations, point charge q moves in a uniform magnetic field B. The strength of the magnetic field is indicated by the density of field lines. In each situation, the initial speed v of the charge is the same. For which situation(s) will the charge q have the largest displacement in a certain time T?
Radioactive Decay: Suppose that in a certain collection of nuclei there were initially 1024 billion nuclei, and 20.0 minutes later there was only 1.00 billion nuclei left, the others having decayed. On the basis of this information, how many nuclei would you estimate decayed in the first 6.00 minutes?
Fill in the blank(s) with the appropriate word(s).
What is the equivalent capacitance between points a and b? All capacitors are 5.0 ?F
a.
2.6 µF
b.
0.19 µF
c.
3.0 µF
d.
0.33 µF
e.
?0.13 µF
Consider a spherical Gaussian surface of radius R centered at the origin. A charge Q is placed inside the sphere. Where should the charge be located to maximize the magnitude of the flux of the electric field through the Gaussian surface?
A) at x = 0, y = 0, z = R/2 B) at the origin C) at x = R/2, y = 0, z = 0 D) at x = 0, y = R/2, z = 0 E) The flux does not depend on the position of the charge as long as it is inside the sphere