A charge of 1.0 × 10-6 ?C is located inside a sphere, 1.25 cm from its center. What is the electric flux through the sphere due to this charge? (?0 = 8.85 × 10-12 C2/N • m2)
A) 0.11 N • m2/C
B) 8.9 N • m2/C
C) 0.028? N • m2/C
D) It cannot be determined without knowing the radius of the sphere.
A
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A solid steel sphere with a radius of 2.0 m falls off a ship and sinks to a depth where the pressure is 15 MN/m2. The bulk modulus for this steel is 1.6 × 1011 N/m2. What is the change in the radius of the sphere?
A) -0.021 mm B) -4.2 mm C) -0.42 mm D) -0.19 mm E) -0.062 mm
A particle (mass = 5.0 g, charge = 40 mC) moves in a region of space where the electric field is uniform and is given by Ex = ?5.5 N/C, Ey = Ez = 0. If the position and velocity of the particle at t = 0 are given by x = y = z = 0 and vx = 50 m/s, vy = vz = 0, what is the distance from the origin to the particle at t = 2.0 s?
A. 60 m B. 28 m C. 44 m D. 12 m E. 88 m
Two cables of the same length are made of the same material, except that one cable has twice the diameter of the other cable
When the same potential difference is maintained across both cables, which of the following statements are true? (There may be more than one correct choice.) A) The electrons have the same drift velocity in both cables. B) The same current flows through both cables. C) Both cables carry the same current density. D) The current in the thin cable is four times as great as the current in the thick cable. E) The current in the thin cable is twice as great as the current in the thick cable.
A ten loop coil of area 0.23 m2 is in a 0.047 T uniform magnetic field oriented so that the maximum flux goes through the coil. This flux is
A) 3.4 × 10-2 Tm2. B) 1.1 × 10-3 Tm2. C) 3.4 × 10-1 Tm2. D) 1.1 × 10-2 Tm2. E) 1.1 × 10-1 Tm2.