A “free” electron and a “free” proton are placed in an identical electric field. Is the following statement true or false?
The electric force on the proton is equal in magnitude to the electric force on the electron, but in the opposite direction.
1.False
2.True
2
You might also like to view...
A small uniform disk and a small uniform sphere are released simultaneously at the top of a high inclined plane, and they roll down without slipping. Which one will reach the bottom first?
A) the one of smallest diameter B) the one of greatest mass C) the disk D) the sphere E) They will reach the bottom at the same time.
Scientists have detected thousands of gamma ray bursts. The evidence suggests that most or all of these bursts
A) have occurred in the central regions of the Milky Way. B) have occurred in distant galaxies. C) come from the same types of close binary systems that produce X-ray bursts. D) come from the Oort cloud surrounding the Sun.
The temperature of the mesosphere decreases from 0°C at the bottom to -90°C at the top. This change in temperature is a result of
A) a decrease in air pressure. B) low absorption of solar radiation—air molecules emit more energy than they absorb. C) low air density. D) all of these
On a cosmic calendar, in which the history of the universe is compressed into 1 year, when did the dinosaurs become extinct?
A) in late December B) in late November C) in late October D) in late September E) in late August