Doug rubs a piece of fur on a hard rubber rod, giving the rod a negative charge. What happens?
a. Protons are removed from the rod.
b. Electrons are added to the rod.
c. The fur is also charged negatively.
d. The fur is left neutral.
b
You might also like to view...
Recall that Hubble's law is written v = H0d, where v is the recession velocity of a galaxy located a distance d away from us, and H0 is Hubble's constant. Suppose H0 = 22 km/s/million light-years. How fast would a galaxy 1000 million light-years away be receding from us?
A) 22 km/s B) 22 million light-years/s C) 22,000 km/s D) 1000/22 km/s E) 0.22 times the speed of light
Triton shows similar cratering to the Lunar highlands, which suggests that it too is an old surface
Indicate whether the statement is true or false
The chemical properties of an element are determined by the
A. number of nucleons in the nucleus B. number of neutrons in the nucleus C. number of electrons in the atom
Which of the following can actually escape from inside a black hole's event horizon?
A) neutrinos B) electrons C) very high energy gamma-rays D) gravitons E) None of the above