Acurrent in a wire increases from 2 a to 6 a. how will the magnetic field 0.01 m from the wire change? a) it increases to four times its original value. b) it increases to three times its original value. c) it decreases to one-fourth its original value. d) it decreases to one-third its original value.

If an atom contains 11 protons in its nucleus, predict the element with the atomic number and electronic configuration. will the number of electrons remain the same during the chemical reaction in such an atom? explain.

Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.

Which of the following forces require physical contact? tension air resistance friction magnetic force applied force