What happens to ISM atoms as they approach a star?
A: they are dispersed backwards
B: they are captured by the star
C: they are deflected around the star
D: they crash into the star
E: they pass right through the star
Ans: C: they are deflected around the star
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An RLC series circuit has a 400
resistance, a 2.50 mH inductor, and a capacitor. If the circuit is in resonance at 30.0 kHz and is attached to a 20 mV rms power supply, what is the rms current?
A. 60
A
B. 40A
C. 30A
D. 50A
E. 25A
The circuit below contains 5 identical light bulbs. The emf is 110 V. Which light bulb(s) is(are) brightest?
a.
A: The one closest to the positive terminal of the battery.
b.
A and C: The bulbs closest to the positive terminal of the battery.
c.
A and B: Because they are closest to the terminals of the battery.
d.
C and D: Because they receive current from A and B and from E.
e.
E: Because the potential difference across E is that of the battery.
The centroid of the semicircular segment shown in the figure below (b 5 6 in.) is at coordinates (x, y)(in.):
(A) 4.5, 3.0
(B) 6.0, 4.0
(C) 5.5, 3.5
(D) 6.0, 3.23
Escape Speed: The value of g at the surface of the spherical Asteroid X is 0.0060 m/s2 and the escape velocity is 10.1 m/s. What is the mass of this asteroid? (G = 6.67 × 10-11 N ? m2/kg2)
A. 2.3 × 1016 kg B. 3.5 × 1012 kg C. 6.5 × 1015 kg D. 4.9 × 1014 kg E. 6.7 × 1013 kg