Conductors typically have particles that are... O closer together so that it is easier for kinetic energy to move from particle to particle.
O farther apart so that it is harder for kinetic energy to move from particle to particle.
O closer together so that it is easier for potential energy to move from particle to particle.
farther apart so that it is harder for potential energy to move from particle to particle.

Space-time metric ds2= -dt2+at2dx2+bt2dy2+ct2dz2 (a)how does the area of a rectangle with vertices at ( x=0, y=0, z=0 ), (1,0,0 ), ( 0,1,0 ) and (1,1,0 ) changes with time? (b) if a photon moving in the x direction starts from the origin at t=1, when does it reach x=l? (ds=0 for the trajectory of a photon.) (c) the proper time for a particle is defined by cd=ds. what is the proper time for a particle to move along the trajectory ( x(t)=t, y(t)=0, z(t)=0 ) from t=0 to 1 ? what is the condition on the parameter a so that the velocity of the particle never exceeds the speed of light ?

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

Carbon 14 is a naturally occurring stable