Charges q and Q are placed on the x axis at x = 0 and x = 2.0 m, respectively. If q = -40 pC and Q = +30 pC, determine the net flux through a spherical surface (radius = 1.0 m) centered on the origin
a. -9.6 N × m2/C
b. -6.8 N × m2/C
c. -8.5 N × m2/C
d. -4.5 N × m2/C
e. -1.1 N × m2/C
D
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Collisions in Two Dimensions: A puck with a mass m1 = 50 g moving at 1.0 m/s approaches a stationary puck with a mass m2 = 100 g on a frictionless air table, and they undergo a sudden two-dimensional elastic collision. After the collision, both pucks have identical speeds, but travel in different directions. What is the angle between the original and final paths of puck with mass m1?
A. 30° B. 60° C. 90° D. 120° E. 150°
An object is placed 10 cm in front of a concave mirror with a 20-cm focal length. Determine the image location (in cm).
A. ?20 B. ?15 C. ?10 D. ?5 E. 6.7
Determine the minimum area of a flat ice floe 1.0 meter thick if it is to support a 2 000-kg car above seawater. (?ice = 920 kg/m3, ?sea = 1 020 kg/m3.)
a. 20 m2 b. 40 m2 c. 60 m2 d. 80 m2 e. 100 m2
Charge of uniform surface density (0.20 nC/m2) is distributed over the entire xy plane. Determine the magnitude of the electric field at any point having z = 2.0 m
a. 17 N/C b. 11 N/C c. 23 N/C d. 28 N/C e. 40 N/C