Which of the following is TRUE of the relationship between electricity and magnetism? O An open circuit will still produce a magnetic field.

O The strength of an induced magnetic field is strongest around the wire that is carrying the current.

O Electricity cannot make a magnetic field.

O An electrical current can magnetize any type of material including plastic.

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

The system is released from rest with the cable taut, and the homogeneous cylinder does not slip on the rough incline. determine the angular acceleration of the cylinder and the minimum coeffi cient s of friction for which the cylinder will not slip.