Arunner covers one lap of a circular track 40.0m in diameter in 63.0s . for that lap, her average speed is 1.99 m/s.

for that lap, what is her average velocity?

if she covered the first half-lap in 28.8s , what was her average speed for that half-lap?

if she covered the first half-lap in 28.8s , what were her average velocity for that half-lap?

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

Explain the difference between each pair of concepts. a. frequency and relative frequency b. percentage and relative frequency a. select the correct choice below. a. frequency is the total number of observations in a data set. relative frequency is the number of times a particular distinct value occurs. b. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of a value to the total number of observations. c. frequency is the total number of observations in a data set. relative frequency is the ratio of the number of times a particular distinct value occurs to the frequency. d. frequency is the number of times a particular distinct value occurs. relative frequency is the ratio of the frequency of two different values.

Which atomic model was proposed as a result of j. j. thomson’s work?