Gfor a random sample of 575 randomly selected car batteries, it was found that their output had a mean of 11.7 volts and a standard deviation of 1.9 volts.

An implanted pacemaker supplies the heart with 72 pulses per minute, each pulse providing 6.0 v for 0.65 ms. the resistance of the heart muscle between the pacemaker’s electrodes is 550 ω. find (a) the current that flows during a pulse, (b) the energy delivered in one pulse, and (c) the average power supplied by the pacemaker.

Achild throws a ball with an initial speed of 8.00 m/s at an angle of 40.0° above the horizontal. the ball leaves her hand 1.00 m above the ground. how long is the ball in flight before it hits the ground?

Crowbar of 5 metre is used to lift an object of 800 metre if the effort arm is 200cm calculate the force applied