Batteries have three parts: an anode, cathode and electrolyte. Electrons build up at the anode, the negative end. Because electrons have the same charge, they repel each other. In a closed circuit, there’s a path for them to take to get to a place with fewer electrons: the cathode, or the positive end. When using batteries, don’t ever directly connect the negative end to the positive end. That will create a short circuit. The wire will get very hot, you might burn yourself and the battery will lose energy quickly. In which detail does the author provide a reason not to connect the negative end of a battery to the positive end directly?

A
“...the battery will lose energy quickly.”

B
“... there’s a path for them to take...”

C
“... they repel each other.”

D
“Electrons build up at the anode...”

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.

To understand the electric potential and electric field of a point charge in three dimensions consider a positive point charge q, located at the origin of three-dimensional space. throughout this problem, use k in place of 14? ? 0. part adue to symmetry, the electric field of a point charge at the origin must point from the origin.answer in one word.part bfind e(r), the magnitude of the electric field at distance r from the point charge q.express your answer in terms of r, k, and q. part cfind v(r), the electric potential at distance rfrom the point charge q.express your answer in terms of r, k, and q part dwhich of the following is the correct relationship between the magnitude of a radial electric field and its associated electric potential ? more than one answer may be correct for the particular case of a point charge at the origin, but you should choose the correct general relationship. a)e(r)=dv(r)drb)e(r)=v(r)rc)e(r)=? dv(r)drd)e(r)=? v(r)r

This is the number of complete movements of a wave per second.