Induction: A negatively-charged plastic rod is brought close to (but does not touch) a neutral metal sphere that is connected to ground. After waiting a few seconds, the ground connection is removed (without touching the sphere), and after that the rod is also removed. The sphere is now
A. negatively charged.
B. positively charged.
C. neutral.
Answer: B
You might also like to view...
An atomic model of the atom is
A) a symbolic representation of the atom. B) a stepping stone to further understanding. C) an abstraction enabling predictions. D) all of the above
A weight lifter can bench press How many milligrams (mg) is this?
A) 1.71 × 108 mg B) 1.71 × 109 mg C) 1.71 × 107 mg D) 1.71 × 106 mg
The red light from a HeNe laboratory laser results from a transition in Ne. Determine the wavelength of the light given off if the energy difference between states is 1.08 eV. (h = 6.63 × 10^?34 J?s, c = 3.00 × 10^8 m/s, 1 eV = 1.60 × 10^?19 J, and 1 nm = 10?9 m)
a. 383 nm b. 1840 nm c. 1150 nm d. 1340 nm e. 203 nm
Which of the jovian planets has/have rings?
A) Neptune B) Jupiter C) Saturn D) Uranus E) all of the above