A 150cm insulated extension cord is use to connect a lamp to an outlet if the copper wire of the cord has a diameter of 2.30mm. what is the resistance of the cord (Resistance of the cord =1.780×10^-8ohme×m

An important dimensionless parameter concerned with very high-speed flow is the mach number, defined as v/c, where v is the speed of the object such as an airplane or projectile, and c is the speed of sound in the fluid surrounding the object. for a projectile traveling at 1170 mph through air at 50 ˚f and standard atmospheric pressure, what is the value of the mach number?

Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?

The stopwatch used by a student to measure velocity of a pulse in a slinky was of least count 0.1 second. he stops the stopwatch when a pulse has made 3 journeys from one end to the other of the slinky. he finds the seconds hand to be at 52nd division. calculate the correct time noted by him.