Which Era followed the Paleozoic era?

Atoms containing radioactive nuclei are called

10. a person with a mass of 15 kg is walking uphill at a velocity of 2 m/s. what is the walker's momentum? a. 15 kg-m/s b. 30 kg-m/s c. 10 kg-m/s d. 13 kg-m/s 16. two bouncy balls colliding with each other is an example of what type of collision? a. inelastic collision b. elastic collision c. parallel collision d. mass collision 20 which of the following is considered to be a vector? a. temperature b. mass c. velocity d. time

Do students need summer development? for 108 randomly selected college applicants, the following frequency distribution for entrance exam scores was obtained. construct a histogram, frequency polygon, and ogive for the data. (the data for this exercise will be used for exercise 13 in this section.)