A point charge (5.0 pC) is located at the center of a spherical surface (radius = 2.0 cm), and a charge of 3.0 pC is spread uniformly upon this surface. Determine the magnitude of the electric field 1.0 cm from the point charge
a. 0.72 kN/C
b. 0.45 kN/C
c. 0.63 kN/C
d. 0.90 kN/C
e. 0.18 kN/C
B
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A spherical conductor (radius = 1.0 cm) with a charge of 2.0 pC is within a concentric hollow spherical conductor (inner radius = 3.0 cm, outer radius = 4.0 cm) which has a total charge of -3.0 pC. What is the magnitude of the electric field 2.0 cm from the center of these conductors?
a. 23 N/C b. zero c. 45 N/C d. 90 N/C e. 110 N/C
Energy Conservation With Conservative Forces: The figure shows a famous roller coaster ride. You can ignore friction. If the roller coaster leaves point Q from rest, what is its speed at the top of the 25-m peak (point S)
A. 10 m/s B. 22 m/s C. 44 m/s D. 62 m/s E. 120 m/s
A rock found on Earth that crashed down from space is called a(n)
A) meteorite. B) meteor. C) asteroid. D) impact.
Which of the two signs shown below would indicate the greatest danger?
