Your friend wants to make an electromagnet strong enough to lift a heavy metal object. What are some suggestions you would give him on how to make the electromagnet strong enough? tried to make it scince didnt have the opption

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

Aperson walks first at a constant speed of 4.89 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 2.95 m/s. what is the average speed over the entire trip?

The scalar triple product computes the magnitude m of the moment of a force vector f about a specified line. it is m = (r × f) · n, where r is the position vector from the line to the point of application of the force and n is a unit vector in the direction of the line. use matlab to compute the magnitude m for the case where f = [12, −5, 4] n, r = [−3, 5, 2] m, and n = [6, 5, −7].