Janet performed a correlational study on the relationship of hours of sleep and performance on a midterm. she found the correlation coefficient to be .32. this indicates that

a. the relationship between sleep and exam performance is fairly strong

b. there is really no relationship between sleep and exam performance.

c. as hours of sleep increase, test performance goes down

d. as hours of sleep decreases, test performance stays the same.

The earth is constantly spinning on its axis, like you might spin a basketball on your finger. it is this spinning of the earth that causes

Atomic nuclei of almost all elements consist of

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)