Even if the Universe has no edge, it has a center
a. True
b. False
Indicate whether the statement is true or false
False
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For a galaxy to be active, the supermassive black hole needs to have matter flow into it
a. True b. False Indicate whether the statement is true or false
What is created by the fusion of three helium nuclei?
B) oxygen C) carbon D) nitrogen E) iron
A proton is first accelerated from rest through a potential difference V and then enters a uniform 0.750-T magnetic field oriented perpendicular to its path. In this field, the proton follows a circular arc having a radius of curvature of 1.84 cm
What was the potential difference V? (mproton = 1.67 × 10-27 kg, e = 1.60 × 10-19 C)
If a = 60 cm, b = 80 cm, Q = ?6.0 nC, and q = 3.0 nC in the figure, what is the magnitude of the electric field at point P?
a.
71 N/C
b.
56 N/C
c.
60 N/C
d.
53 N/C
e.
67 N/C