A solid conducting sphere (radius = 5.0 cm) has a charge of 0.25 nC distributed uniformly on its surface. If point A is located at the center of the sphere and point B is 15 cm from the center, what is the magnitude of the electric potential difference between these two points?
a. 23 V
b. 30 V
c. 15 V
d. 45 V
e. 60 V
b
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In a mass spectrometer, an ion will have a smaller radius for its circular path if:
a. its mass is greater. c. its charge is greater. b. the magnetic field is weaker. d. its speed is greater.
Distilled water at 75ºF is suddenly exposed to oxygen gas at 75ºF. Determine the time before the oxygen concentration in the water is 0.1% by mass at a point 0.05 inches below the surface of the distilled water.
What will be an ideal response?
Answer the following statement(s) true (T) or false (F)
1. The current flow in the wire is constant in time. 2. The current is the same for any cross-sectional area spanning the wire at any point along the wire. 3. The electric field inside the wire is zero. 4. The net charge density in the wire’s interior is zero. 5. Excess charges may be found on the wire’s surface.
Mathematically, the product of mass, velocity, and radius is called _____
A) specific gravity B) angular momentum C) linear energy D) spectral radius