An engineer at the company you are working for hat jut i reported finding an unusual electromagnetic wave. this wave consists only of an electric field, with no magnetic field accompanying it. you are certain that the engineer b mistaken becausea. an electromagnetic wave must have a magnetic field that changes with time to produce its electric field. b.electromagnetic waves always contain huh electric charges and magnetic poles, and magnetic poles arc accompanied by magnetic fields. c.electromagnetic waves con tarn moving electric charges and charges produce magnetic fields when they move. d.while waves consisting only of electric fields arc common and travels indefinitely through space, they are known as "electric waves." not "electromagnetic waves.

Make them both to where they have the denominator of 18that makes 3/2 equal 27/18 and 1/9 equal 2/18so now you have  27/18x+5=2/18subtract 5 from the other sideso now you have 27/18x+2/18-5then subtract 2/18 from 27/18 to get 25/18x=-5then divide 25/18 by -5 and your answer will be  -5/18

The figure is missing but we can answer anyway.the correct answer is "releasing the string". in fact, when the person is holding the bow and the arrow, the kinetic energy of the arrow is still zero (because the arrow is not moving). the moment the arrow is released, it acquires a velocity v, so its kinetic energy will become different from zero: where m is the mass of the arrow and v its velocity.  all the other options, instead, do not increase the kinetic energy of the system: -  pulling farther back on the string : this will just increase the elastic potential energy of the system-  holding the arrow higher: this will increase the gravitational potential energy of the system (which is given by u=mgh, where h is the height above the ground)-  decreasing the mass of the arrow: this will decrease the gravitational potential energy of the system (which is given by u=mgh, where m is the mass)

En espanol amigo por favor