Rank the magnitudes of the forces exerted on the following particles from largest to smallest. In your ranking, display any cases of equality
(a) an electron moving at 1 Mm/s perpendicular to a 1-mT magnetic field
(b) an electron moving at 1 Mm/s parallel to a 1-mT magnetic field
(c) an electron moving at 2 Mm/s perpendicular to a 1-mT magnetic field
(d) a proton moving at 1 Mm/s perpendicular to a 1-mT magnetic field
(e) a proton moving at 1 Mm/s at a 458 angle to a 1-mT magnetic field
1.d > a = c > b > f
2.a > c > d > b = c
3.c > a = d > e > b
4.b > f > c > d > a
5.b > c > a > f > d
3
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A resistor and a capacitor are connected in series across an ideal battery having a constant voltage across its terminals. At the moment contact is made with the battery (a) the voltage across the capacitor is A
equal to the battery's terminal voltage. B) less than the battery's terminal voltage, but greater than zero. C) equal to the battery's terminal voltage. D) zero. (b) the voltage across the resistor is A. equal to the battery's terminal voltage. B) less than the battery's terminal voltage, but greater than zero. C) equal to the battery's terminal voltage. D) zero.
Light of intensity I0 and polarized horizontally passes through three polarizes. The first and third polarizing axes are horizontal, but the second one is oriented 20.0° to the horizontal. In terms of I0, what is the intensity of the light that passes through the set of polarizers?
A) 0.780I0 B) 0.180I0 C) 0.442I0 D) 0.883I0
Specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C After the 1 kg block of ice melts, the amount of heat required to raise its temperature to 10°C is __________
Fill in the blank(s) with correct word
If R = 2.0 k?, C = 4.0 mF, ? = 8.0 V, Q = 20 mC, and I = 3.0 mA, what is the potential difference Vb ? Va?
a.
+7.0 V
b.
+19 V
c.
+9.0 V
d.
?3.0 V
e.
?14 V