If R = 3.0 k?, C = 6.0 nF, ? 1 = 10.0 V, Q = 18 nC, ? 2 = 6.0 V, and I = 5.0 mA, what is the potential difference Vb ? Va?
a.
?13 V
b.
+28 V
c.
+13 V
d.
?28 V
e.
+2.0 V
d
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What observational evidence do we have that eruptions in the centers of galaxies involve magnetic fields?
What will be an ideal response?
____________ in Saturn's rings is/are produced by the gravitational interaction of Mimas with the particles in the rings and appears as a large ____________ in the rings
a. Cassini's division; gap b. Cassini's division; clump c. Moons; gap d. Moons; clump
A charge q = 3 × 10-6 C of mass m = 2 × 10-6 kg, and speed v = 5 × 106 m/s enters a uniform magnetic field. The mass experiences an acceleration a = 3 × 104 m/s2. What is the minimum magnetic field that would produce such an acceleration?
A) 0.1 T B) 0.004 T C) 0.001 T D) 0.01 T E) 0.04 T
The three blocks shown are released from rest and are observed to move with accelerations that have a magnitude of 1.5 m/s2. What is the magnitude of the friction force on the block that slides horizontally? Disregard any pulley mass or friction in the pulley and let M = 2.0 kg
a.
6.0 N
b.
5.1 N
c.
5.5 N
d.
4.6 N
e.
3.7 N