Tony uses the device shown in the diagram to model how an electromagnet is used in his uncle’s scrap metal yard.
not sure how to get the diagram - a battery held up by a nail with coiled wire
after picking up several staples with the device, what change would enable tony to drop the staples in the scrap metal bin?
1. removing the
2. removing the iron
3. moving the wire loops closer
4. spreading the wire loops farther

The charge on a charged sphere is: a)concentrated at its centerb)distributed uniformly throughout its volumec)clustered on its centerd)distributed uniformly over its surface

In automobile steering wheel is shown what is the ideal mechanical advantage blank? if the ama is eight what is the efficiency of the steering wheel?

Review multiple-concept example 7 in this chapter as an aid in solving this problem. in a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. in one instance, the radius of the circle is 0.626 m. at one point on this circle, the ball has an angular acceleration of 66.1 rad/s2 and an angular speed of 12.6 rad/s. (a) find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) determine the angle of the total acceleration relative to the radial direction.