Why do balloons make noise when they pop?

Why are magnetic fields evidence of sea floor spreading

what is the average speed of a person who can run around the track 4 times in 5 minutes? the track is 400 meters long.

A 2.0-kg object moving at 5.0 m/s collides with and sticks to an 8.0-kg object initially at rest. Determine the kinetic energy lost by the system as a result of this collision.

Is it possible for an object's instantaneous velocity and instantaneous acceleration to be of opposite sign at some instant of time?

Calculate the distance in kilometers that Charlie runs if he maintains an average speed of 8 km

What is the source of energy for the process of evaporation?

How could you compare the energy carried in two different longitudinal waves

The instantaneous velocity of an object is the blank of the object with a blank

Which of the following best describes the earth's average surface temperature for the past 900,000 years? A. a steady warming trend B. fairly steady temperatures until recently C. prolonged periods of cooling and warming D.

What should you always include in a great summary? (Select all that apply) A. investigation plan B. possible errors C. predictions D. new questions