You wanted to use your electric grill in your backyard. You need an extension cord. What will be the requirement of your extension cord in order to use your electric grill without any incidents. Base your explanation on " the resistance of a conducting wire increases with the increasing length of a wire".

What is the rate of change in a objects position?

What sort of waves exhibit the doppler effect?

Two cannon balls weighing 18 kg and 24 kg are chained together and fired horizontally with a velocity of 165 m/s from the top of a 21-m wall. the chain breaks during the flight of the cannonballs and the 18-kg cannonball strikes the ground at t = 1.5 s, at a distance of 240 m from the foot of the wall, and 7 m to the right of the line of fire. determine the position of the other cannonball at that instant. neglect the resistance of the air.