A nonconducting sphere of radius 10 cm is charged uniformly with a density of 100 nC/m3. What is the magnitude of the potential difference between the center and a point 4.0 cm away?
A. 12 V
B. 6.8 V
C. 3.0 V
D. 4.7 V
E. 2.2 V
Answer: C
You might also like to view...
____ is a set of rules that describes how atoms and subatomic particles behave
a. Kirchhoff's law b. Blackbody radiation law c. The Coulomb force d. Quantum mechanics e. The binding energy
Force on a Wire: A thin copper rod 1.0 m long has a mass of 0.050 kg and is in a magnetic field of 0.10 T. What minimum current in the rod is needed in order for the magnetic force to balance the weight of the rod?
A. 1.2 A B. 2.5 A C. 4.9 A D. 9.8 A
Which of the following observations does NOT inform astronomers about how the Solar System must have formed.
A. The Solar System is flat in structure. B. All known ages for Solar System bodies are 4.6 billion years or younger. C. The farther out planets take longer to complete an orbit about the Sun. D. The inner four planets are small and rocky, while the outer four planets are large and gaseous.
A 600-kg car is going around a curve with a radius of 120 m that is banked at an angle of 20° with a speed of 24.5 m/s. What is the minimum coefficient of static friction required for the car not to skid?
A) 0.12 B) 0.24 C) 0.36 D) 0.48 E) 0.60