A rock found on Earth that crashed down from space is called ________

A) an impact B) an asteroid C) a meteor D) a meteorite


D

Physics & Space Science

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The mean free path of molecules in a gas is:

A. the average distance a molecule travels before escaping B. the average distance a molecule travels between collisions C. the greatest distance a molecule travels between collisions D. the shortest distance a molecule travels between collisions E. the average distance a molecule travels before splitting apart

Physics & Space Science

A piece of rope is pulled by two people in a tug-of-war. Each exerts a 400-N force. What is the tension in the rope?

A) zero B) 400 N C) 600 N D) 800 N E) none of the above

Physics & Space Science

Nuclear power plants on Earth create energy in the same way as the Sun

Indicate whether the statement is true or false

Physics & Space Science

Consider the magnitude of the average speed, vavg, speed, mag, and the magnitude of the average velocity, vavg, velocity, mag, for the same trip. Which of the following is always true?

a. vavg, speed, mag = vavg, velocity, mag b. vavg, speed, mag ? vavg, velocity, mag c. vavg, speed, mag ? vavg, velocity, mag d. none of the above

Physics & Space Science