Would the self-created electric field at the end of a pointed conductor, such as a lightning rod, remove positive or negative charge from the conductor? would the same sign charge be removed from a neutral pointed conductor by the application of a similar externally created electric field? (the answers to both questions have implications for charge transfer utilizing points.)

Why is there friction between objects

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?