2. How does the electrical force relate to the charge of an object?
a. It is inversely proportional to the square of the charge.
b. It is directly proportional to the square of the charge.
C. It is inversely proportional to the charge.
d. It is directiy proportional to the charge.
D. It is directly proportional to the charge

The least penetrating form of radiation is

Arunner is jogging at a steady 3.6 km/hr. when the runner is 2.9 km from the finish line, a bird begins flying from the runner to the finish line at 14.4 km/hr (4 times as fast as the runner). when the bird reaches the finish line, it turns around and flies back to the runner. even though the bird is a dodo, we will assume that it occupies only one point in space, i.e., a zero-length bird. how far does the bird travel? (b) after this first encounter, the bird then turns around and flies from the runner back to the finish line, turns around again and flies back to the runner. the bird repeats the back and forth trips until the runner reaches the finish line. how far does the bird travel from the beginning? (i.e. include the distance traveled to the first encounter)

Decreased sensitivity to an unchanging stimulus is known as