You are watching Canada day fireworks from a distance. You observe the light, and then hear the sound 3.50 seconds later. How far are you from the location of the firework, if the termometer outside of yur home shows a temperature of 5.00 degrees celcius?

An electric current is flowing through the cord below.what will happen to this current if a magnet is brought near the cord? a. the electric current will stop flowing. b. it will exert a force on the voltage. c. the resistance of the wire will decrease. d. it will exert a force on the electric current.

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

Asap and show ! a 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.